lulzasaur makes spreadsheets for trading card collectors and sellers.
The Price Tracker keeps purchase prices, current values and a watchlist together. The Vendor Workbook records inventory lots, sales, returns and profit after fees.
Each listing includes a short worked example and setup instructions. Choose the tracker for your collection, or the vendor workbook for the cards you sell.
These are digital downloads. Check the supported software in the listing. If you need help opening a file, send a message through Etsy.