A marketplace with a lower seller fee can still leave you with less money. A $20 sale may lose its margin to shipping, payment processing, returns, and nonrecoverable taxes, while a $500 sale can absorb different costs—especially ads and insurance. The right platform depends on what you sell, how often you sell, and what each order truly costs.
Platform and marketplace comparisons and fees should measure the full cost per sale, not just the listed commission. Compare ecommerce marketplaces, resale apps, handmade platforms, and your own store using estimated net profit at $20, $100, and $500 price points, including product cost, shipping weight, advertising, payment processing, returns, and taxes. Use the cost matrix and calculator to choose a channel that protects your margin.
What actually reduces profit on each sale
The listed seller fee is only the first bill.
Total order cost means every dollar tied to one sale: product cost, platform charge, payment processing, shipping, packaging, advertising, return losses, and taxes you cannot recover. Think of a sale like a restaurant check. The menu price is not the final amount after tax, tip, and delivery.
A seller who buys a shirt for $12 and sells it for $30 has not made $18. If the platform, label, mailer, promoted listing, and expected returns take $12, the usable profit is $6 before income tax.
Separate required and optional costs
Required costs include final value fees, listing fees, transaction fees, and payment processing. Optional costs include promoted listings, Amazon Ads, Etsy Offsite Ads where applicable, subscriptions, fulfillment, and software.
Optional does not always mean avoidable. Amazon sellers may need ads in crowded categories, and Shopify stores often need paid traffic because buyers do not arrive through a built-in marketplace search.
A useful profit calculation is: sale price − product cost − platform fees − payment fees − shipping − packaging − ad cost − return reserve − nonrecoverable taxes = net profit. Marketplace-collected sales tax is usually paid by the buyer and remitted by the platform, so it should not be counted as seller revenue.
Weight can beat commission rates
A 12% fee sounds expensive until a bulky package enters the equation. Carriers price many large parcels by dimensional weight, which is the space a box takes up, not only its scale weight.
A 2-pound item can cost between $6 and $10 to ship within the United States, depending on distance and service. A large but light item can cost far more because the carrier treats the box like a heavier one.
A common mistake is choosing a platform based on a fee percentage alone. That mistake is especially costly for furniture, gym equipment, tools, and low-priced goods where shipping is the real margin killer.
Returns are a planned expense
A return reserve is money set aside for likely refunds, lost outbound labels, damaged stock, and unsellable items. It is like keeping an umbrella near the door: it does not cause rain, but it prevents one storm from wrecking the day.
For apparel or fit-sensitive products, a practical starting reserve can be between 5% and 15% of sales, then adjusted based on actual return records. Electronics, collectibles, and handmade custom work need different assumptions because return behavior and protection rules differ.
Choose this framework if you need to know whether a sale is truly profitable before listing it. The next section puts the major U.S. channels beside the same cost assumptions.
Fee comparison at $20, $100, and $500
The same product economics produce different winners.
The table uses standard U.S. fee structures available as of September 2026, rounded estimates, and deliberately simple assumptions. Fees vary by category, account plan, payment method, shipping destination, promotions, and changes made by each company, so confirm current terms on the official eBay selling fees, Etsy fees policy, and Amazon pricing pages before pricing stock.
For comparison, the $20 order assumes a $5 item cost, $5.50 shipping and packaging, no ad spend, and a small return reserve. The $100 order assumes a $35 cost, $9 shipping and packaging, $3 ads, and a $5 return reserve. The $500 order assumes a $220 cost, $28 insured shipping and packaging, $20 ads, and a $30 return reserve.
| Platform and sale type | Typical standard seller charge | Est. Net on $20 | Est. Net on $100 | Est. Net on $500 | Best fit |
|---|
| eBay, standard categories | Often about 13.6% plus $0.40 per order, category varies | $6.38 | $34.00 | $133.60 | Searchable resale, collectibles |
| Etsy, standard U.S. order | 6.5% transaction, $0.20 listing, payment processing varies | $7.12 | $35.60 | $141.10 | Handmade, vintage, craft supplies |
| Amazon Individual, 15% category example | Referral fee plus $0.99 per item, fulfillment extra | $5.51 | $33.01 | $130.01 | New catalog goods with demand |
| Shopify Basic with Shopify Payments | Monthly plan plus card processing, traffic extra | $8.62 | $45.10 | $185.50 | Repeat buyers and owned audience |
| Poshmark, U.S. shipped sale | $2.95 under $15, 20% at $15 and above | $5.50 | $28.00 | $122.00 | Fashion bundles, higher-priced apparel |
| Facebook Marketplace, local pickup | Often no platform fee for local person-to-person sales | $14.00 | $57.00 | $242.00 | Bulky local inventory |
These are scenario estimates, not promises or universal fee quotes. Amazon FBA pick, pack, storage, inbound shipping, and returns can reduce Amazon net well below this example; Etsy Offsite Ads can also change the result; Shopify paid acquisition can turn its strong-looking per-order result into a loss.
Low-ticket shipping leaves little room for error. A $0.40 fixed charge is 2% of a $20 sale but only 0.08% of a $500 sale.
Facebook Marketplace local pickup looks strongest here because the example removes postage. It fails when a buyer does not show, you drive 25 minutes each way, or the product requires a safer public meeting spot.
Mercari, Depop, and Poshmark can work for low-cost apparel, but offers and shipping choices must be priced in. A seller who accepts $14 for a $20 listed item may lose money even when the app’s published fee looks modest.
A $100 order has room for packaging, a return reserve, and a small ad budget. That makes product-channel fit more valuable than chasing the smallest commission.
Etsy can be a good fit for a $100 handmade item when its search audience finds the product without much paid promotion. Shopify can keep more per order only when an email list, social following, repeat buyers, or low-cost traffic already exists.
A common real-world case is a seller moving $100 vintage jackets from Poshmark to eBay. The eBay fee may be lower, but if listings get fewer qualified views and more return requests, the apparent savings disappear.
A $500 sale needs insurance, careful packing, signature confirmation in many cases, and a return policy that the seller can afford. The expensive part is often not the fee but a disputed delivery or damaged return.
Local pickup can preserve the most cash for bulky inventory in California, Texas, Florida, and other large U.S. markets. Yet local pickup is not free: time, fuel, safety planning, and buyer no-shows have a cost even when the platform does not charge one.
The practical recommendation is direct:
- use eBay or a niche channel for searchable, shippable high-ticket resale
- use Facebook Marketplace or OfferUp for large local goods
- use Shopify only when demand is already yours
Where each dollar goes on a $100 sale
Product $35
Fees $14
Ship $9
Ads $3
Returns $5
Net $34
Price: $100Example: eBay-style fee loadNet margin: 34%
For most U.S. side hustles, start with one channel that already has buyers for your product instead of opening five accounts. Use local pickup for heavy stock, Etsy for handmade search demand, eBay for broad resale, and Shopify after you can bring repeat traffic. The exception is a low-ticket shipped item: fixed charges and postage can make every major channel unprofitable until you bundle items or raise the price.
Choose this comparison if you have a sale price and product cost in mind. The next decision is whether a resale app’s buyer behavior helps or hurts that calculation.
Fulfillment changes marketplace profitability even when two platforms quote similar referral rates. For a $100 item, a seller fulfilling the order personally might pay $9 for postage and packaging, while an FBA order can add pick-and-pack, storage, inbound freight, and return-related charges that vary by size tier and season. Conversely, FBA may reduce labor and improve conversion for a fast-moving standard-size product. Local pickup removes parcel postage but should include an allowance for messages, no-shows, fuel, and handoff time.
Compare Amazon FBA, merchant fulfillment, third-party fulfillment, and local pickup as separate scenarios; otherwise, a platform with a lower visible marketplace commission can appear cheaper while producing a lower net result.
Resale apps change the math
Resale apps are not smaller versions of Amazon.
Facebook Marketplace, Poshmark, Mercari, Depop, and OfferUp are peer-to-peer marketplaces. They bring buyers who often expect offers, bundles, used-condition details, and quick replies, so the selling work and buyer protections differ from Amazon Marketplace, Etsy, Walmart Marketplace, or a Shopify store.
The common advice is that Facebook Marketplace has no fees. That is incomplete for U.S. sellers because local transactions can avoid a platform commission, while shipping programs, payment tools, boosts, travel, and failed meetups can still reduce the real return.
Facebook Marketplace and OfferUp
Facebook Marketplace is usually strongest for furniture, exercise equipment, tools, baby gear, and other items that are expensive to ship. OfferUp serves a similar local-pickup role in many U.S. cities, though demand varies widely by metro area.
Meet buyers in a public place, do not rely on payment screenshots, and keep messages inside the platform where possible. The Federal Trade Commission warns consumers and sellers about marketplace scams, including fake payments and overpayment tricks, through its consumer protection guidance.
Local pickup is a poor fit for a $20 item if you spend an hour arranging a meeting. It is a strong fit for a $500 treadmill when parcel freight would swallow much of the sale price.
Poshmark, Depop, and Mercari
Poshmark charges a flat $2.95 on sales under $15 and 20% for sales of $15 or more under its familiar U.S. seller model. That is high for a basic $100 item, but it may still be worthwhile when its fashion audience and prepaid shipping workflow produce faster sales.
Depop suits style-led vintage, streetwear, and curated apparel, while Mercari has historically covered broader household goods, collectibles, and lighter merchandise. Their payment, shipping, buyer-fee, and protection structures have changed more than once, so confirm current U.S. terms before treating an old blog post as a price list.
This works well in theory, but in practice, repeated offers can cut more profit than the listed app fee. Set a lowest acceptable offer before listing, including shipping and packaging, rather than negotiating from the visible asking price.
eBay for searchable resale
eBay earns its fee through search reach, category filters, auctions, sold-item history, and shipping tools. It is often better than a lower-fee resale app for collectibles, parts, electronics, sneakers, and branded goods that buyers search by model or exact condition.
Promoted Listings can add cost, commonly between 2% and 10% or more depending on competition and the rate selected. Do not add advertising after pricing an item: include an ad assumption in the original margin calculation.
Choose resale apps if you have fashion, used goods, or local inventory and can handle offers. Avoid them for tightly controlled new-product catalogs, restricted goods, or items whose margin cannot survive discounts; the next section matches each inventory type to a channel.
Mercari and Depop deserve a separate check before you cross-list fashion or small resale inventory. Depop is generally strongest when styling, trend relevance, and a curated shop identity help justify the asking price; its buyers may respond to bundles and offers, so discount expectations belong in the return reserve or discount field. Mercari can suit lighter household goods, collectibles, and general resale, but its fee presentation and buyer-paid or seller-paid shipping options have changed over time.
Compare the checkout total, the party paying postage, seller protection terms, and the lowest acceptable offer—not only the headline fee. A $20 item can be more profitable on Poshmark’s prepaid-label workflow, while a $100 collectible may perform better where search demand is stronger.
Match inventory to the right channel
Your product should choose the platform.
A handmade candle, a used sofa, a new phone case, and a vintage denim jacket need different buyer pools. Listing the same item everywhere without changing the price, photos, shipping plan, and return terms can create more work without creating better profit.
Handmade, digital, and custom goods
Etsy is often the practical first marketplace for handmade goods, vintage items, craft supplies, and some digital products because shoppers arrive looking for those categories. Sellers must still account for $0.20 listing fees, transaction fees, payment processing, and possible Offsite Ads charges.
Shopify fits a maker once repeat customers, an email list, local events, creator partnerships, or social traffic can send buyers to the store. Its lower direct order charge does not create demand by itself.
For print on demand, calculate base production and shipping before selecting a platform. A $20 shirt can look profitable until the provider’s base cost, shipping, Etsy charges, and a discount leave only a few dollars.
Heavy and bulky inventory
Heavy products belong close to the buyer. Facebook Marketplace and OfferUp usually beat Amazon FBA, Etsy shipping, and standard parcel fulfillment when the item is large, fragile, or awkward to pack.
This is especially true in sprawling U.S. markets such as Texas and Florida, where a local buyer may be willing to drive for a used patio set, power tool, or exercise machine. Price the inconvenience honestly: a $40 discount for same-day pickup may be cheaper than a $120 freight claim.
Choose local platforms if shipping is more than about 15% to 20% of the sale price or the box needs special handling. Avoid them if personal meetings are impractical, unsafe, or too time-consuming for your expected profit.
Branded resale and volume stock
eBay is often the broadest starting point for branded resale because buyers search exact names, sizes, part numbers, and conditions. Amazon can outperform it for new, approved products with steady demand, but Amazon restrictions, invoices, referral fees, FBA storage, and return policies need checking before inventory is bought.
Walmart Marketplace can suit established catalog sellers but is not a simple first account for an occasional declutterer. Poshmark and Depop can be better for apparel where styling and community discovery matter more than a model-number search.
Choose eBay for shippable resale with clear search demand, Etsy for genuinely handmade work, Amazon or Walmart Marketplace for approved scalable catalog goods, and Shopify for a brand with its own audience. The next section turns that choice into numbers you can reuse.
Build your per-sale calculator
A calculator prevents hopeful pricing.
Copy this model into Google Sheets, Excel, or a notebook before buying stock. A break-even price is the lowest sale price that covers every cost, leaving zero profit; it is the floor, not the target.
| Cell | What to enter | $100 example |
|---|
| A | Sale price | $100.00 |
| B | Cost of product or materials | $35.00 |
| C | Platform and payment fees | $14.00 |
| D | Shipping, packaging, insurance | $9.00 |
| E | Ads, discounts, return reserve | $8.00 |
| F | Net profit formula: A−B−C−D−E | $34.00 |
Add weight and packaging first
Enter actual packed weight, not the product weight alone. A ceramic mug may weigh one pound, but the box, padding, tape, and void fill can move it into a more expensive shipping tier.
Use a scale and measure the closed parcel. This small habit prevents a common loss: charging a buyer for a guessed label, then paying the difference when the carrier adjusts the postage.
Reserve for ads and returns
Ad cost should be an average per completed sale, not an average per click. If you spend $60 on promoted listings and those ads produce 12 completed orders, your ad allocation is $5 per order.
For returns, start with a cautious percentage and revise it after 20 to 50 orders. A seller with a 10% return rate and a $12 average loss per return should reserve about $1.20 per sale before claiming the product earns a certain margin.
In practice, sellers who log returned items, discounts, and carrier adjustments price more accurately within a few weeks than sellers who only watch payout totals.
Compare payout with real profit
A payout is the cash a platform sends after its immediate deductions. Real profit also includes later refunds, return labels, chargebacks, damaged inventory, and subscription costs that may appear elsewhere.
New accounts can face holds or delayed payouts, while established sellers may be paid on different schedules. Track cash flow separately if you need money to buy replacement inventory.
Choose this calculator if you sell more than a few items per month or are considering a platform switch. It makes the final issue visible: taxes, refund rules, and labor can change a profitable spreadsheet line into a weak side hustle.
Use one row per listing and calculate the effective cost before you publish it: net profit per sale = sale price − product cost − marketplace commission − payment processing fees − shipping costs − packaging − advertising costs − return reserve − nonrecoverable taxes. Keep platform charges in separate cells rather than entering one blended percentage, because seller fees, final value fees, listing fees, and transaction fees do not always use the same fee base.
Add package dimensions as well as scale weight, since dimensional weight can change the label price. This simple matrix makes online selling costs visible and lets you compare ecommerce platform fees and resale platform fees on the same item instead of relying on advertised rates.
Returns, tax, and time still count
Payouts are not the finish line.
Marketplace Facilitator Sales Tax Laws generally require major marketplaces to collect and remit sales tax from buyers in many states. That does not automatically settle income tax, direct-store sales tax, licenses, or state nexus, which means a business connection that can create tax duties.
Sales tax is not your revenue
Do not treat buyer sales tax as your sale price when the marketplace collects it. On Shopify and other direct stores, sales tax setup can differ by state and may require professional advice, especially for sellers with activity in California, New York, Texas, Florida, or Washington State.
A direct store seller who ships nationwide should not assume a marketplace’s tax rules protect Shopify orders. State rules change, and sales volume or physical presence can matter.
Keep records for 1099-K reporting
The Internal Revenue Service uses Form 1099-K reporting rules under Internal Revenue Code Section 6050W, but the reporting threshold has changed over time. Verify the current requirement on the IRS site each tax year, and remember that taxable self-employment income can exist even without a form.
Save records for inventory, shipping, mailers, seller fees, refunds, mileage, software, and advertising. Those records show your actual profit and can support legitimate expense deductions under self-employment tax rules.
Put a price on your labor
A $12 net profit is weaker if it takes 50 minutes to photograph, list, answer messages, pack, and deliver the item. Divide total net profit by active hours each month to see whether the side hustle is beating other options such as freelancing, Taskrabbit work, DoorDash, Uber, Upwork, or Fiverr.
A common mistake at this stage is counting gross sales as side-hustle income. A $2,000 sales month can leave less than $500 after inventory, fees, returns, and labor.
Do not use this comparison as a substitute for product research, sourcing, or basic margin planning if you do not yet know what to sell. It also does not replace tax, sales-tax, licensing, insurance, or legal advice for your business and state.
Choose a platform only after its return policy, payout schedule, and tax recordkeeping fit your available time. That makes the answers below easier to apply without relying on old fee charts.
Your questions answered
Facebook Marketplace local pickup can have the lowest direct fees, but it is only cheapest when travel, time, and no-shows stay low. Shopify may have lower per-order charges for an established brand, while eBay, Amazon, Etsy, and Walmart Marketplace can justify higher fees through built-in buyer traffic.
Facebook Marketplace and OfferUp usually cost least for local pickup because shipping can be avoided. For shipped resale, compare eBay, Mercari, Poshmark, and Depop using the full order cost, including labels, offers, buyer protection, and expected returns.
How much does Etsy take from a $100 sale?
Etsy charges depend on listing fees, its 6.5% transaction fee, payment processing, shipping, and possible Offsite Ads. A $100 order can leave between roughly $30 and $45 after a $35 product cost and ordinary shipping, but materials and ad spending can move that result sharply.
Is Poshmark cheaper than eBay?
Poshmark can be simpler for fashion, but its 20% fee on sales of $15 or more is often higher than eBay’s standard category fee. Poshmark may still produce more profit when its audience sells an item faster or at a higher price.
How do I avoid Facebook Marketplace fees?
Local person-to-person pickup can avoid many direct platform charges, but never move to unsafe payment methods to save money. Meet in public, verify payment in your own account, and include fuel and time when deciding whether the sale is worthwhile.
Is Shopify better than Amazon for a side hustle?
Shopify is better when you can bring repeat buyers or low-cost traffic, while Amazon is better when its marketplace demand can sell approved products quickly. Shopify has subscription and payment costs; Amazon has referral, fulfillment, storage, and return costs.
Do I pay tax if I do not get a 1099-K?
Income from online selling can still be taxable even if no 1099-K arrives. Keep sales and expense records, then check current Internal Revenue Service guidance or speak with a qualified tax professional.
Pick one channel and test profit
The best first platform is the one that can sell your specific product at a price that survives all predictable costs.
Start with 10 to 20 listings on the channel matched to your inventory, record every fee and return, then update the calculator after the first month. Do not migrate an entire catalog because another seller says a platform has lower fees.
For most occasional sellers, Facebook Marketplace is the practical choice for heavy local goods and eBay is the safer broad choice for shippable resale. For makers, Etsy is usually the better demand test; Shopify should follow when repeat traffic is real, not hoped for.
- What matters most: net profit per order includes inventory, fees, shipping, ads, returns, and labor.
- For low-ticket goods: fixed fees and postage often matter more than commission percentages.
- For bulky goods: local pickup can beat shipped marketplaces when freight would consume 15% to 20% or more of the sale.
- For handmade products: Etsy tests marketplace demand, while Shopify works best after you can create your own traffic.
- Before scaling: test one channel, record real outcomes, and price from the full cost rather than the payout screen.
Learn more
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