Collection & Flip Tracker (Excel + Google Sheets)

Are you actually making money on cards? Most flippers know their best sale and forget their fees. This tracker holds every raw card, slab and sealed box you own, logs each sale with the real platform fee taken out, keeps your non-card expenses, and answers the question on one dashboard: unrealized gain, realized profit, ROI, and what each platform is really costing you.

What makes it different

• Fees are looked up, not guessed. eBay (13.25% + $0.40), TCGplayer Marketplace and Pro, Whatnot, Mercari, Fanatics Collect, local and trades, all editable on one tab. Your net proceeds and profit per sale are automatic.
• Slabs, raw and sealed in one place. Type, grader, cert number, condition, quantity for lots, grading and shipping cost folded into cost basis.
• Status that drives the numbers. Holding, Listed, At grader, Sold. Mark a row Sold, log the sale with the same Item ID, and profit flows back to the inventory row and the dashboard.
• Dashboard built for tax season. Gross sales, fees paid, shipping costs, net proceeds, cost basis, realized profit before and after expenses, average fee rate, a by-platform table and the last 12 months.
• Room to grow. 300 inventory rows, 300 sales, 200 expenses; extend by copying the last row.

What you get

One Excel workbook (.xlsx) that imports cleanly into Google Sheets and LibreOffice. Yellow cells are inputs, everything else is a protected formula. Five example rows are pre-filled so you can see how it behaves, then delete them.

Pair it with the Grading ROI Calculator to decide what to grade, and with Set Value Sheets to update your market column in minutes.

Free updates

When a platform changes its fee schedule we update the workbook and you download the new version from your original link.

Fee tables verified 13 September 2026. GradeWorthy is not affiliated with The Pokémon Company, Nintendo, PSA, CGC, TAG, Beckett, eBay, TCGplayer or Whatnot. A bookkeeping aid, not tax or financial advice.