Reseller Profit Calculator

How Platform Fees Eat Your Reselling Profit

Every reselling platform takes a cut of your sale, and the differences are significant. A reseller profit calculator is the fastest way to see exactly how much you keep after each marketplace takes its share. Selling a $50 item on eBay leaves you with a very different take-home than selling the same item on Facebook Marketplace, Mercari, or Poshmark. The gap can easily exceed $7 per transaction, and when you multiply that across hundreds of sales per month, choosing the wrong platform costs you thousands of dollars annually. This calculator compares your actual profit after fees on every major reselling platform so you can make data-driven decisions about where to list each item.

Most new resellers focus exclusively on what an item sells for without accounting for the fees that silently erode their margins. A shirt that sells for $30 on Poshmark nets you $24 after their 20% fee. That same shirt on Mercari at $30 nets you $27 after the 10% fee. Over the course of a year, resellers who track their per-platform profitability consistently outperform those who do not. Use this reselling profit calculator before every listing decision to maximize the money that actually hits your bank account.

Complete Fee Breakdown for Every Reselling Platform

Understanding the exact fee structure of each platform is critical for any reseller who wants to run a profitable business. Below is a detailed breakdown of what each marketplace charges in 2025, including nuances that most fee summaries leave out.

eBay: 13.25% Final Value Fee + $0.30 Per Order

eBay charges a 13.25% final value fee on the total sale amount including shipping, plus a flat $0.30 per-order fee. This means on a $50 sale, eBay takes $6.93 in fees. The final value fee percentage can vary slightly by category -- some categories like musical instruments and business equipment carry lower rates around 6-9%, while most clothing, electronics, and general merchandise fall at the standard 13.25% rate. eBay also collects sales tax on behalf of sellers in most states, which does not come out of your profit but does affect the buyer's total. For high-volume sellers, an eBay Store subscription can reduce final value fees by 1-4% depending on the tier, making it worthwhile once you consistently list 50 or more items per month.

Poshmark: 20% Commission (or $2.95 Flat Fee Under $15)

Poshmark takes the largest cut of any major reselling platform at a flat 20% for sales of $15 or more. For sales under $15, Poshmark charges a flat $2.95 fee instead. On a $50 sale, Poshmark takes $10.00 -- nearly double what Mercari or Depop would charge. The tradeoff is that Poshmark provides a prepaid shipping label (USPS Priority Mail) for all sales, so the seller pays nothing for shipping. However, this is baked into the buyer's cost as a separate shipping fee. For items priced above $30, Poshmark's fee structure becomes increasingly expensive compared to other platforms. This reseller profit calculator accounts for these differences automatically.

Mercari: 10% Selling Fee

Mercari charges a straightforward 10% selling fee on the item price. On a $50 sale, Mercari takes $5.00. This is one of the more competitive fee structures among reselling platforms. Mercari supports both seller-paid and buyer-paid shipping options with various carriers including USPS, UPS, and FedEx. Sellers can also offer local meetup for zero shipping cost. The simplicity of the 10% flat rate makes it easy to calculate your expected profit before listing, which is why many resellers prefer Mercari for mid-range items in the $20-$100 range.

Depop: 10% Selling Fee

Depop also charges a 10% selling fee, putting it on par with Mercari in terms of cost. On a $50 sale, Depop takes $5.00. Depop skews toward a younger demographic and is particularly strong for vintage clothing, streetwear, and trendy fashion items. Shipping is handled separately and can be either seller-paid or buyer-paid. For sellers who specialize in fashion and accessories targeting Gen Z buyers, Depop can be highly profitable despite the 10% fee because items in its core categories often command higher prices than on general marketplaces.

Facebook Marketplace: $0 for Local Pickup

Facebook Marketplace charges zero fees for local pickup transactions, making it the most profitable platform per sale for any item you can sell locally. There are no listing fees, no selling fees, and no payment processing fees when you handle the transaction in person. For shipped items, Facebook does charge a selling fee, but local pickup remains entirely free. This makes Facebook Marketplace the clear winner for bulky items like furniture, appliances, and exercise equipment where shipping would be prohibitively expensive anyway. The downside is a smaller audience compared to dedicated reselling platforms and less buyer protection, but the zero-fee structure means every dollar of profit goes directly to you.

How to Calculate True Reselling Profit

True profit is not simply the sale price minus what you paid for the item. A proper reselling profit calculator accounts for three core cost components: cost of goods sold (COGS), platform fees, and shipping costs. The formula is straightforward but must include every expense to be accurate.

The calculation works as follows: start with your sale price, then subtract your cost of goods (what you paid to source the item, including any tax or mileage to acquire it), subtract the platform-specific selling fee, and subtract your shipping cost if you are covering it. The result is your true net profit.

For example, suppose you buy a jacket at a thrift store for $8, sell it on eBay for $45, and pay $8.50 to ship it. eBay takes 13.25% of $45 ($5.96) plus $0.30, totaling $6.26 in fees. Your true profit is $45 - $8 - $6.26 - $8.50 = $22.24. That same jacket sold on Poshmark at $45 would generate $36 after the 20% fee ($9.00), and with Poshmark covering shipping, your profit would be $45 - $8 - $9.00 = $28.00. In this scenario, Poshmark actually wins despite the higher fee because shipping is included. This is exactly why running the numbers through a reselling profit calculator matters -- the answer is not always intuitive.

Many experienced resellers also factor in secondary costs like packaging materials ($0.50-$2.00 per shipment for poly mailers, boxes, and tape), gas mileage for sourcing trips, and the time spent photographing, listing, and shipping each item. While this calculator focuses on the three primary cost components, keeping a separate spreadsheet for overhead costs gives you the full picture of your business profitability.

Which Platform Pays You the Most by Item Type

Different platforms perform better for different categories of items. Choosing the right marketplace based on what you are selling can increase your profit by 15-30% on each transaction. Here is a general guide based on fee structures and buyer demographics.

Clothing and Fashion ($20-$100 range)

For clothing in the $20-$100 range, Mercari and Depop typically yield the highest profit due to their 10% fee structure. Poshmark has a larger fashion-focused audience but the 20% fee significantly cuts into margins. eBay falls in the middle at 13.25%. If you can sell clothing locally on Facebook Marketplace, the zero-fee structure makes it the most profitable option, though fashion items generally sell better on dedicated platforms where buyers actively browse by size, brand, and style.

Electronics and Gadgets ($50-$500 range)

Electronics sell best on eBay due to the massive buyer pool and strong search traffic for specific models. Despite the 13.25% fee, eBay's audience for electronics is unmatched, and items often sell at higher prices than on other platforms. Mercari is a solid second choice at 10%. For high-value electronics like laptops and gaming consoles, Facebook Marketplace local pickup eliminates both fees and the risk of shipping damage, making it ideal for items over $200.

Furniture and Large Items

Facebook Marketplace is the clear winner for furniture and oversized items. Zero fees and local pickup mean you keep 100% of the sale price minus your sourcing cost. Shipping furniture is expensive and risky, so platforms that require shipping are rarely worth using for this category. A dresser you buy for $20 and sell locally for $150 nets you the full $130 profit on Facebook versus $130.83 in fees on eBay.

Vintage and Collectibles

eBay remains the dominant platform for vintage items, collectibles, and rare goods because of its global buyer base and auction format. Collectors are willing to pay premium prices on eBay because of the trust and buyer protection the platform provides. Depop is a strong alternative for vintage clothing specifically, especially items from the 1990s and 2000s that appeal to younger buyers.

Shipping Cost Impact on Reseller Profits

Shipping is one of the most overlooked profit killers in reselling. A $7-$12 shipping cost on a $30 item can reduce your profit margin from healthy to barely worthwhile. Understanding how shipping interacts with platform fees is essential for pricing items correctly.

USPS First Class Package (under 1 lb) typically costs $4-$6, making it the most affordable option for lightweight items like clothing, small accessories, and media. USPS Priority Mail ranges from $8-$15 depending on weight and distance, and is required for Poshmark shipments. UPS and FedEx Ground can be more cost-effective for heavier packages over 2 lbs, especially with discounted rates available through platforms like eBay and Mercari.

When you use this reselling profit calculator, always include your actual shipping cost rather than leaving it at zero. The results will show you whether an item is worth shipping at all, or whether you should pivot to selling it locally on Facebook Marketplace where shipping costs disappear entirely.

Local Pickup vs. Shipped: When to Use Each

The decision between local pickup and shipping comes down to item weight, value, and your local market. Local pickup through Facebook Marketplace eliminates both platform fees and shipping costs, but limits your buyer pool to people within driving distance. Shipped sales on eBay, Mercari, Depop, and Poshmark reach millions of buyers nationwide, but fees and shipping reduce your net profit.

As a general rule, sell locally when the item is heavy or bulky (shipping would exceed $12), when the item is common enough that local demand exists, or when the item value is under $20 and shipping fees would eat most of your margin. Ship the item when it is rare or niche (limited local demand), lightweight and inexpensive to ship, or valued above $40 where the broader audience justifies the fees.

Many successful resellers use a hybrid approach: list on Facebook Marketplace first for local pickup, then cross-list on eBay or Mercari after a week if it does not sell locally. This reseller profit calculator helps you see the profit difference between both approaches so you can set a local price and a shipped price accordingly.

Profit Margin Targets for Resellers

Understanding what constitutes a good profit margin is essential for building a sustainable reselling business. Profit margin is your net profit divided by the sale price, expressed as a percentage. A 50% profit margin means you keep half of what the item sells for after all costs.

Most experienced resellers target a minimum 50% profit margin on sourced items. This means if you buy a pair of jeans for $5, you should aim to sell them for at least $20 after accounting for fees and shipping. Items with margins below 30% are generally not worth the time and effort unless you can process them in high volume with minimal handling. Items with margins above 70% are excellent finds and should be prioritized in your sourcing.

Use the reselling profit calculator above to check your margin on each platform before listing. If no platform gives you an acceptable margin on a particular item, it may be better to skip it entirely and focus your time on higher-margin inventory. Time is your most valuable resource as a reseller, and low-margin items consume the same amount of listing and shipping effort as high-margin ones.

How to Factor In Sourcing Costs

The "buy price" field in this reseller profit calculator should reflect your total cost to acquire the item, not just the sticker price. Sourcing costs include the purchase price plus any additional expenses required to get the item into sellable condition and ready for listing.

If you drive 30 minutes to a thrift store, your gas and mileage should be allocated across the items you source during that trip. A trip that costs $5 in gas where you buy 10 items adds $0.50 to the cost of each item. Cleaning supplies, batteries for testing electronics, and minor repairs also add to your true cost basis. Some resellers add a flat $1-$2 per item to their buy price to account for these incidental expenses.

For online sourcing through liquidation pallets, wholesale lots, or retail arbitrage, include the per-item cost of the lot (total price divided by number of sellable items, discarding unsellable ones), any inbound shipping you paid, and the cost of supplies needed to prepare items for resale. Accurate cost tracking is what separates profitable resellers from those who think they are making money but are actually losing it after accounting for all expenses.

Frequently Asked Questions

What is a reseller profit calculator and why do I need one?

A reseller profit calculator is a tool that computes your actual take-home profit after subtracting all costs from your sale price, including platform selling fees, cost of goods, and shipping expenses. You need one because each reselling platform charges different fees, and manually calculating profit across eBay, Poshmark, Mercari, Depop, and Facebook Marketplace for every item is time-consuming and error-prone. This calculator does the math instantly and shows you which platform maximizes your profit for any given item.

Which reselling platform has the lowest fees?

Facebook Marketplace has the lowest fees at $0 for local pickup transactions. Among platforms that facilitate shipped sales, Mercari and Depop are tied at 10% each. eBay charges 13.25% plus $0.30 per order, and Poshmark has the highest fees at 20% for items over $15. However, lowest fees do not always mean highest profit -- factors like audience size, shipping costs, and typical sale prices on each platform also matter.

How do I calculate my profit margin on a resale item?

Profit margin is calculated by dividing your net profit by the sale price and multiplying by 100. Net profit equals your sale price minus your cost of goods, minus platform fees, minus shipping costs. For example, if you sell a shirt for $40, paid $5 for it, have $4 in platform fees, and $6 in shipping, your net profit is $25 and your margin is 62.5%. Enter your numbers into the reselling profit calculator above to see your margin on every platform simultaneously.

Should I always list on the platform with the lowest fees?

Not necessarily. The platform with the lowest fees is not always the most profitable choice. An item might sell for $50 on eBay but only $35 on Mercari because eBay has more buyers searching for that specific product. Even with eBay's higher fees, the higher sale price can result in more profit. The best strategy is to cross-list on multiple platforms and use a reselling profit calculator to set appropriate prices on each one based on their fee structures.

What is a good profit margin for reselling?

Most successful resellers aim for a minimum 50% profit margin after all costs. This means if an item sells for $40, you want to keep at least $20 in profit. Margins below 30% are generally not worth the effort for individual items unless you are processing high volume. Margins above 70% are considered excellent and indicate strong sourcing. The ideal target depends on your volume -- high-volume resellers can sustain lower margins because they make up for it with quantity.

How does shipping cost affect which platform is most profitable?

Shipping cost can completely change which platform gives you the most profit. A heavy item that costs $15 to ship might be most profitable on Facebook Marketplace (zero fees, local pickup, no shipping) even though Mercari has lower selling fees than eBay. Poshmark includes a prepaid shipping label, which can make it the best choice for items where you would otherwise pay $8 or more to ship, despite the 20% fee. Always enter your actual shipping cost into this calculator to see the true comparison.

Can I use this reselling profit calculator for wholesale or bulk items?

Yes. For wholesale or bulk items, enter your per-unit cost as the buy price. If you purchased a lot of 20 items for $100, your per-unit cost is $5. Enter $5 as your buy price along with your expected sell price and shipping cost for a single unit. The calculator will show your per-item profit on each platform, which you can then multiply by your total quantity to estimate the profit for the entire lot.