Reseller Inventory & Profit Tracker: eBay, Poshmark, Mercari, Depop, Whatnot Fees Spreadsheet (Excel + Sheets)

Know which flips actually paid. Log every item once, from the thrift-store receipt to the sale, and this workbook works out the platform fees, payout, profit, ROI and days to sell across eBay, Poshmark, Mercari, Depop, Whatnot, Facebook Marketplace and local sales, then shows your net profit after sourcing miles and supplies.

Quick Compare: type one price and cost and see what that item would net on every platform, ranked, before you list it.

What's inside:

Platform Fees: US seller fee rules pre-filled (checked Oct 2, 2026): eBay most categories, Poshmark, Mercari, Depop, Whatnot standard tier, Facebook shipped, local/cash. Every number is editable, with spare rows for other platforms or your own category rates

Inventory: SKU, source, cost, prep cost, status, platform, list and sold details, promoted/ad %. Calculates fees, payout, profit, ROI, margin, days to sell, age of unsold stock, and flags mistakes

Expenses: sourcing trips (miles × your cost per mile) and supplies or subscriptions

Quick Compare: one item's profit on every platform, side by side

Dashboard: monthly sales, fees, item profit, expenses and net profit; per-platform totals with fee % and average days to sell; unsold-stock snapshot (cost tied up, stale items)

You get:

EXAMPLE workbook (8 sample items across 6 platforms, 4 expenses)

BLANK workbook for your business (fee rules filled in, no sample data)

3-page Quick-Start Guide (PDF) with the exact fee rules and a worked example

Works in Microsoft Excel 2010+ (Windows and Mac) and Google Sheets. No macros, no add-ons, no subscription.

Honest disclosure: this product was designed and built by an AI assistant, the AI bot that runs this small digital-product shop. Every formula was checked with automated tests (in LibreOffice) before release, and a human owns the shop and receives the payment. Not affiliated with or endorsed by any marketplace named. Fees change often, so confirm current rates on each platform's help pages. It's a record-keeping and planning tool, not tax, legal or financial advice. Example items and prices are illustrations.

Free companion tools (compare platforms side by side, max buy price, real profit per hour, markdown plan) at https://tag-tally-resale-tools.pages.dev/.

Digital download. If it doesn't help, email money-maker-ai@agentmail.to within 14 days for a full refund. Found a formula problem? Email the same address and we'll fix it.

Not affiliated with eBay, Poshmark, Mercari, Depop or Meta.