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Flea Market Fee & Profit Calculator

Calculate fees, net profit, and ROI for Mercari, Rakuma, PayPay Flea Market, eBay, and more.

Flea Market Fee & Profit Calculator
Rate: 10%
Breakdown
Net Profit
¥1,200
Platform Fee
10% × ¥3,000
¥300
Profit Margin
40.0%
ROI
120.0%
Breakdown
Net Profit (40.0%)
Purchase Cost (33.3%)
Platform Fee (10.0%)
Shipping Cost (16.7%)

About Online Marketplace Fee Calculation

Selling on marketplaces like Mercari, Yahoo Auctions, eBay, Poshmark, Depop, and similar platforms involves multiple layers of fees: listing fees (sometimes), final value fees (a percentage of the sale), payment processing fees (often included or charged separately), and sometimes shipping or promotional fees. The combined cut can range from 10% to 25%+ of the gross sale, often more than sellers realize when listing items.

This calculator helps sellers see the actual net per sale across different platforms. Input gross sale price and the calculator returns the net after fees, the effective fee percentage, and a side-by-side comparison if comparing platforms. For pricing items, the inverse calculation gives the listing price needed to net a target amount.

Fee structures change periodically and vary by category, seller tier, and promotional period. The calculator covers common defaults; check the current fee schedule of your specific marketplace for authoritative numbers.

Why Calculate Marketplace Fees

Pricing decisions on marketplaces need to account for the platform's cut. A $50 item sold on Mercari yields about $43 net after their 10% sales fee; on eBay with payment processing the same item nets less. Listing without knowing the actual take-home leads to systematic underpricing.

Comparing platforms also benefits from explicit fee math. Each marketplace has different fee structures, and the cheapest one for a $20 item may not be the cheapest for a $200 item. The calculator surfaces these crossovers.

How to Calculate Marketplace Fees

Select the platform, enter the price, see the net.

  1. Choose your marketplace: Mercari, Yahoo Auctions, eBay, Poshmark, Depop, or other supported platforms. Each has its own fee schedule built into the calculator.
  2. Enter the gross sale price: What the buyer pays. Include any required platform price floor.
  3. Select category if relevant: Some platforms have category-specific fee rates (eBay categories, for example). Pick the matching category for accurate output.
  4. Review fees and net: The calculator returns each fee component (sales fee, processing fee, listing fee if any) and the resulting net to seller. Compare against other platforms if needed.

Common Use Cases

Technical Details

Mercari standard: 10% selling fee on the item price (no listing fee, no separate payment processing). Mercari Japan and Mercari US have similar but not identical structures.

Yahoo Auctions Japan: 8.8% commission for premium members, 10% for standard. Plus optional listing options that have their own fees.

eBay: Final value fee 10-13.25% depending on category, plus a per-order fixed fee around $0.30. Payment processing is included but international payouts have additional fees. Store subscribers get reduced rates.

Best Practices

Frequently Asked Questions

What's Mercari's fee?
10% selling fee on the item price. No separate listing fee, no separate payment processing fee. The 10% comes out automatically when the sale completes.
How does eBay's fee compare to Mercari?
eBay typically takes 10-13.25% in final value fee plus around $0.30 per order. Total cost is similar to Mercari for typical items but eBay has more variability based on category and seller tier.
Are fees deducted before or after I receive payment?
Marketplaces deduct fees from the gross sale automatically. The amount you receive is already net of platform fees.
Do platforms charge fees on shipping?
Varies. eBay charges fees on the total including shipping; Mercari historically did not on certain shipping options. Read the current fee schedule for your platform.
Are marketplace fees tax deductible?
Yes, for sellers running a business. Marketplace fees are a deductible business expense. Consult a tax professional for specifics.
What happens with returns and refunds?
Returns vary by platform. Some refund the original sale fee; some keep it. eBay refunds final value fees on full refunds; Mercari typically refunds when the seller refunds the buyer.
Can I trust the calculator for accounting?
It matches the published fee schedules, but for authoritative reconciliation use the marketplace's own statements. Promotional rates and special offers may not be captured.
Is my data uploaded?
No. Calculations happen in your browser.