Enter your sale price and cost basis. See true net profit after eBay's final value fee, payment processing, shipping, and supplies — to the cent.
What you paid for the slab — including grading fees if applicable.
eBay charges 13.25% of the total sale amount (including shipping) for collectibles — graded comics fall under this category. Sellers with an eBay Store may have a lower rate. See eBay's current fee schedule →
eBay managed payments applies 2.9% + $0.30 per transaction. Some high-volume sellers may have a negotiated rate.
Enter the actual postage cost. USPS Priority Mail boxes are free from USPS — enter $0 if using them. Enter your actual label cost for UPS, FedEx, or other carriers.
Cost of your mailer, bubble wrap, tape, and any other packing materials. Comic slab-specific mailers (e.g. BCW, Comic Connect) typically run $1.50–$4.00 per shipment.
A $500 sale is not $500 of revenue. eBay's 13.25% final value fee alone takes $66.25. Add payment processing, postage, and packaging — and the number you actually pocket is often 20–25% less than the sale price. This calculator does the full math so you don't have to.
Before you list, the most important number is the minimum price you can accept without losing money. Because eBay's percentage fees scale with the sale price but postage and supplies don't, the break-even formula is non-linear. This calculator solves it for you exactly.
This calculator is a one-off tool. 98 Ticker's Pro and Dealer plans do this math on every book in your inventory — automatically, against the live eBay floor price — so you always know your margin before you list. Plus price drop alerts, P&L tracking, and Schedule D export at tax time.
98 Ticker tracks live CGC 9.8 floor prices from eBay and calculates your true margin automatically — on every book in your inventory. Free to start, no credit card required.
Start tracking free →