Card Flip ROI Calculator
See your real profit after platform fees, shipping and costs — before you list. eBay's 13.25% trading card fee and 5 platforms built in.
13.25% + $0.30 (trading cards category)
Bubble mailer with top loader + tracking
Enter your buy price and expected sell price above to see your profit, ROI and break-even.
How to Calculate Your Card Flip ROI
Four steps to know your real take-home before you list.
Enter your costs
Input what you paid for the card. Add grading costs (PSA, BGS etc.) and supplies if applicable. This is your total cost basis.
Set your sell price
Enter the price you expect to sell at. Use recent eBay sold listings (filter: Sold Items) to find the realistic market price.
Pick your platform
eBay charges 13.25% + $0.30 for trading cards. Whatnot charges ~10.8% + $0.30. Local sales have zero fees but a smaller buyer pool.
Choose shipping
BMWT (bubble mailer with top loader) at ~$3.50 is the standard for tracked card shipping. PWE at $0.73 works for low-value raw cards only.
Frequently Asked Questions
What is the eBay fee for selling sports cards in 2026?
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eBay charges 13.25% of the total sale price (including shipping) plus $0.30 per order for trading cards in 2026. On a $100 sale, that is $13.55 in fees, leaving you with $86.45 before shipping costs and your buy price.
How do I calculate my ROI on a card flip?
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ROI = (Net profit ÷ Total cost) × 100. Net profit = sell price minus platform fees, shipping, buy price, grading and supplies. Example: buy $20, sell $50 on eBay ($6.93 fee + $3.50 BMWT) = $39.57 net revenue, $19.57 profit on $20 cost = 97.8% ROI.
What is the cheapest way to ship a sports card?
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A PWE (plain white envelope) with a stamp costs around $0.73 and works for low-value raw cards. For tracked shipments, a BMWT (bubble mailer with top loader) runs $3.50-$4.50. USPS padded flat rate envelopes at $8.95 are best for multiple cards or graded slabs.
Is Whatnot cheaper than eBay for selling cards?
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Whatnot charges 8% commission + 2.9% payment processing + $0.30, totalling approximately 10.8% + $0.30. eBay charges 13.25% + $0.30. Whatnot is cheaper on percentage fees for most sales, but eBay has a larger buyer pool which can drive higher final prices.
What is a good ROI on a card flip?
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A good card flip ROI is 30% or more after all fees. Professional flippers target 50-100% ROI on quick flips. Anything under 20% ROI is generally not worth the effort once you factor in your time. Graded card flips typically have lower ROI due to the fixed grading cost.
What does break-even mean for a card flip?
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Break-even is the minimum sell price where you make exactly $0 profit. It accounts for your buy price, platform fees, shipping and all costs. Selling above break-even is profit; below is a loss. Always calculate your break-even before listing.
What is the best free card flip ROI calculator?
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ToolStack's Card Flip ROI Calculator is the most complete free option available in 2026. It includes real eBay trading card fees (13.25% + $0.30), Whatnot, COMC, Facebook and local cash platforms, five shipping options from PWE to graded card boxes, a live platform comparison table ranked by profit, automatic break-even calculation, and optional grading and supplies cost tracking. No signup, no paywall.
Why Most Card Flippers Underestimate Their Costs
The most common mistake in card flipping is calculating profit as "sell price minus buy price." That number is fiction. eBay takes 13.25% + $0.30 from every trading card sale. A card you sell for $50 nets you $43.25 before shipping. Add $3.50 for a tracked BMWT shipment and your net revenue is $39.75 — not $50.
For graded cards, the numbers get more complex. A $25 PSA grading fee is a fixed cost that only makes financial sense on cards worth $200 or more. On a $100 raw card graded at PSA Value tier, your total cost is $125 before platform fees and shipping. You need the graded card to sell above $148 just to break even.
Platform choice matters more than most sellers realise. Whatnot's lower fee rate (10.8% vs eBay's 13.25%) can mean an extra $5–$20 per card on higher-value flips. Local cash sales eliminate all fees but introduce liquidity risk — you need a buyer in your area willing to pay market price. The right platform depends on your card's value and your need for speed.
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