Reselling for Profit: eBay, Poshmark, and Mercari Fee Breakdown | CalcFalcon

Reselling sounds simple — buy low, sell high, pocket the difference. But the difference between a profitable reselling business and an expensive hobby comes down to understanding exactly how much each platform takes from every sale. eBay’s 13.25% final value fee, Poshmark’s flat 20%, Mercari’s 10% plus payment processing, and Facebook Marketplace’s 5% all eat into your margins differently depending on what you sell and at what price point.

This article breaks down the fee structures, walks through real profit scenarios, and shows you how to calculate whether reselling is actually worth your time. You can model your own numbers with our Reselling Profit Calculator as you read.

How Reselling Platform Fees Actually Work

Each platform takes its cut differently, and the differences matter more than most new resellers realize. A $40 sale can net you anywhere from $12 to $20 depending on the platform — that is a 67% variance in profit from the same item at the same price.

eBay: 13.25% Final Value Fee

eBay charges a 13.25% final value fee on the total sale amount including shipping. This is the single fee — eBay handles payment processing through its Managed Payments system, so there is no separate PayPal or processing charge. On a $40 sale, eBay takes $5.30.

eBay also charges $0.35 per listing after your first 250 free monthly listings. Most casual resellers never hit that cap. Promoted listings cost an additional 2% to 15% of the sale price if you opt in, but they are entirely optional.

The 13.25% rate applies to most categories. Some categories like musical instruments and heavy equipment have lower rates (3.5% to 6.35%), but clothing, electronics, and general merchandise — the categories most resellers operate in — all sit at 13.25%.

Poshmark: Flat 20% Commission

Poshmark takes a flat 20% commission on all sales over $15. For sales under $15, they take a flat $2.95. This is the simplest fee structure of any major reselling platform, but it is also the most expensive for higher-priced items.

On a $40 sale, Poshmark takes $8.00. On a $100 sale, they take $20.00. The upside is that Poshmark includes a prepaid shipping label with every sale — the buyer pays $7.97 for standard shipping (up to 5 lbs), so you do not need to factor in shipping costs from your end. This simplicity is attractive, but the 20% cut means you need higher margins to make it work.

Poshmark’s model works best for items with high markup — brand-name clothing bought at thrift stores for $3 to $8 and sold for $25 to $60. The 20% fee hurts more on lower-margin items like books or electronics.

Mercari: 10% Plus 2.9% Processing

Mercari charges a 10% selling fee plus 2.9% payment processing plus $0.50 per transaction. On a $40 sale, that works out to $4.00 plus $1.16 plus $0.50 = $5.66 total. This makes Mercari slightly more expensive than eBay for most sales but significantly cheaper than Poshmark.

Mercari’s fee structure favors mid-range items. The fixed $0.50 transaction fee is a larger percentage on cheap items (5% on a $10 sale vs. 0.5% on a $100 sale), so selling $5 items on Mercari is not efficient. For items in the $20 to $80 range, Mercari often beats eBay by a small margin once you factor in eBay’s promoted listing costs.

Facebook Marketplace: 5% Fee

Facebook Marketplace charges a 5% selling fee on shipped items (minimum $0.40 per order). On a $40 sale, that is just $2.00 — by far the lowest platform fee. Local pickup sales through Marketplace have no fee at all.

The catch is reach and trust. FB Marketplace has a massive user base but weaker buyer protections, no authentication services for luxury items, and a more casual shopping experience. Conversion rates tend to be lower than dedicated reselling platforms, and you handle your own shipping logistics.

A $40 Sale Across Four Platforms

Let’s run a concrete example. You buy a jacket at a thrift store for $15, list it for $40, and spend $8 on shipping (except on Poshmark where the buyer pays). Packaging materials cost $2.

eBay

Revenue: $40.00. Platform fee: $5.30. Shipping: $8.00. Materials: $2.00. Cost of goods: $15.00. Net profit: $9.70. Profit margin: 24.3%. ROI on investment ($17): 57.1%.

Poshmark

Revenue: $40.00. Platform fee: $8.00. Shipping: $0.00 (buyer pays). Materials: $2.00. Cost of goods: $15.00. Net profit: $15.00. Profit margin: 37.5%. ROI on investment ($17): 88.2%.

Wait — Poshmark has the highest fee but the highest profit? Yes, because the buyer-paid shipping label eliminates $8 from your cost structure. For items that would cost $7 or more to ship, Poshmark’s prepaid label often more than offsets the higher commission. For lightweight items that cost $3 to $4 to ship, eBay or Mercari will usually win.

Mercari

Revenue: $40.00. Platform fee: $5.66. Shipping: $8.00. Materials: $2.00. Cost of goods: $15.00. Net profit: $9.34. Profit margin: 23.4%. ROI on investment ($17): 54.9%.

Facebook Marketplace (shipped)

Revenue: $40.00. Platform fee: $2.00. Shipping: $8.00. Materials: $2.00. Cost of goods: $15.00. Net profit: $13.00. Profit margin: 32.5%. ROI on investment ($17): 76.5%.

The ranking shifts depending on the item price, weight, and shipping cost. Run your specific scenario through our Reselling Profit Calculator to see which platform gives you the best margin.

What Most Resellers Underestimate

Sourcing Time Is Your Biggest Hidden Cost

The most commonly ignored expense in reselling is the time you spend finding inventory. A Saturday morning thrift store run takes 3 to 4 hours of driving, browsing, and evaluating items. If you come home with 8 items that eventually sell for $12 average profit each, that is $96 in profit for 4 hours of sourcing — $24 per hour before you factor in listing time, shipping time, and customer service.

But “eventually” is the key word. Not everything you buy sells quickly or at all. If 6 of those 8 items sell and 2 sit in your closet for months, your effective return drops. Experienced resellers report that 10% to 30% of their inventory never sells at the price they need, turning into dead stock that ties up capital.

Listing and Shipping Time

Each item takes 15 to 30 minutes to photograph, write a description, measure, and list. Packing and shipping takes another 10 to 15 minutes per sale. At 8 sales per week, that is 3 to 6 hours of listing and fulfillment work — on top of sourcing time.

If you are netting $12 per item and spending 25 minutes per item on listing and shipping, your per-item effective hourly rate for that work is roughly $29 per hour. That is decent, but well below what many reselling influencers advertise.

Photography and Storage

Quality photos sell items faster and at higher prices. You do not need a professional setup, but good lighting and a clean background make a measurable difference. A simple lightbox ($20 to $50) and your phone camera are sufficient for most items.

Storage becomes an issue as inventory grows. Keeping 50 to 100 items organized, accessible, and in good condition requires dedicated space. Some resellers rent storage units ($50 to $150 per month), which adds a fixed cost that needs to be spread across your sales volume.

Which Platform Works Best for What

Clothing and Accessories

Poshmark dominates this category. The built-in social features (Posh Parties, sharing, following) create a community of fashion buyers who actively browse. The buyer-paid shipping removes a major friction point. Brand-name clothing with original tags consistently gets the best prices on Poshmark compared to other platforms.

Electronics and Gadgets

eBay is the clear winner for electronics. The buyer base is accustomed to purchasing used tech, the search functionality is built for spec-based shopping, and eBay’s authenticity guarantee covers certain categories. Electronics on Poshmark tend to sell slowly because the audience is fashion-focused.

Home Goods and Furniture

Facebook Marketplace for local pickup items. Shipping a $30 lamp eats most of your profit on any platform, but a local sale with zero shipping and zero platform fee (no fee on local pickup) is pure margin minus your sourcing cost.

Books and Media

Amazon is actually the strongest platform for books (through Amazon Seller or FBA), but among the four platforms discussed here, eBay offers the best combination of reach and reasonable fees. Mercari works for book bundles. Poshmark does not support book sales.

Scaling Beyond Casual Reselling

The difference between someone earning $200 per month reselling and someone earning $2,000 per month comes down to three factors: sourcing efficiency, inventory turnover, and average selling price.

Sourcing Efficiency

Top resellers develop relationships with specific thrift stores and know their restock schedules. They focus on categories they know well — a reseller who specializes in vintage denim can spot a $3 pair of Levi’s 501s that will sell for $45 in seconds, while a generalist might walk right past it. Specialization dramatically improves your hit rate and reduces wasted sourcing time.

Retail arbitrage (buying clearance items at Target, Walmart, or TJ Maxx and reselling on eBay or Amazon) is another approach that trades lower margins for more predictable inventory. A $12 clearance kitchen gadget that sells for $25 on eBay yields a smaller profit per item but a more reliable supply chain.

Inventory Turnover

Capital tied up in unsold inventory earns nothing. A reseller with $500 in inventory that turns over every 30 days makes more than a reseller with $2,000 in inventory that turns over every 90 days — even if the per-item profit is similar. Track your days-to-sell metric and be willing to price aggressively on items that have sat for 60 or more days. If the Etsy marketplace is part of your strategy, our Etsy fee breakdown details how that platform’s more complex fee stack affects your margins.

Average Selling Price

Higher-priced items generate more profit per transaction. A $100 item with a 25% margin makes you $25. A $20 item with a 40% margin makes you $8. You would need to sell three of the cheap items to match one expensive item, and each sale carries its own listing, packing, and shipping time. Experienced resellers gradually move upmarket as they develop expertise in authenticating and pricing higher-value items.

Tax Implications for Resellers

Reselling income is self-employment income. If you net more than $400 in a year, you owe self-employment tax (15.3%) in addition to your regular income tax. The IRS receives 1099-K forms from platforms that process more than $5,000 in payments, but your tax obligation exists regardless of whether you receive a 1099.

Your cost of goods sold — what you paid for the items — is deductible. So are platform fees, shipping costs, packaging materials, mileage to thrift stores and the post office (at $0.70 per mile in 2026), home office space used for photographing and storing inventory, and any tools or equipment used for the business. Our side hustle tax guide covers the full picture for resellers and other independent earners.

If your monthly net exceeds roughly $500, start making quarterly estimated tax payments to avoid an underpayment penalty at filing time.

Is Reselling Worth Your Time?

The math works for people who enjoy the hunt, have good product knowledge in a specific niche, and treat it as a structured business rather than a casual hobby. At 10 to 15 hours per week including sourcing, listing, and shipping, a well-run reselling operation can generate $800 to $2,000 per month in net profit. The overhead is minimal — no storefront, no employees, flexible hours.

It does not work as well for people who buy impulsively without checking comps, underestimate their time investment, or spread too thin across too many product categories. The biggest risk is not losing money on individual items — it is spending 20 hours per week on an operation that nets $10 per hour when your time could be better spent elsewhere. If you want to benchmark whether your margins are healthy, our profit margin guide for side hustles covers gross, net, and operating margins across reselling, dropshipping, digital products, and services.

Calculate Your Reselling Profit

Every item and every platform combination produces a different margin. Plug your actual purchase price, selling price, and platform into our Reselling Profit Calculator to see your real profit, margin, and ROI before you list. The calculator handles eBay, Poshmark, Mercari, and Facebook Marketplace fees automatically — so you can compare platforms in seconds and list where your margins are strongest.