COMC Analytics – Free Insights for Buyers & Sellers (Unofficial)

Win rate, best sellers, accounting, price alerts and more for your COMC store. Free and unofficial.

COMC Analytics turns your COMC exports into a flipper's dashboard. Log in to COMC, click Refresh, and open the full-page dashboard. WHAT'S NEW IN 3.0 A ground-up rebuild. The popup is now a launcher; the real app opens in its own tab. KNOW YOUR NUMBERS • Win rate, profit factor, expectancy, average win and loss, median profit • Breakdowns by category, set, player, graded vs raw, cost bucket, hold time, and where you bought or sold • Monthly win-rate trend with a 3-month rolling line • A conservative mode that counts stale unsold purchases as losses BEST SELLERS • The same card across every copy you have flipped: times flipped, total and average profit, win rate, median days, copies in stock • What you keep buying and how it turned out; what sells and its sell-through ACCOUNTING • Profit and loss by month, quarter or year: revenue, COMC fees, net proceeds, cost of goods, account costs • Auction fees linked to the sales they were charged for • Store credit ledger by transaction type, inventory aging, tax-lot CSV export LEDGER • Every purchase is its own lot, matched to its sale using COMC's own acquisition date, so repeat flips, returns and submitted cards are counted correctly • Submitted cards pick up their COMC processing fee automatically; add off-platform costs by CSV import or from any table • Inventory, Purchases, Sales, Flips and Unsold views with search, sortable tables and CSV export • Every filter from 2.x: grader, grade range, condition, seller or buyer, and min/max on prices, profit, ROI and days held REPRICE FASTER • Assisted repricing: choose a rule (match the lowest, undercut by a cent or a percent, never below cost), review every suggestion, and open each item on COMC with the price already typed in. You press Save; the extension never does. • Work in batches: filter to the cards that are not the low price, open the next 10, 25 or 50 in tabs, reprice, advance • Action queues: add cards to a named list (Auction, Live, Ship Home), work it in tabs, and a banner on each COMC item page marks done and jumps to the next • "Held 90+ days" filters and an alert when purchased cards pass 90 days without the low price WATCHLIST & ALERTS • Price watches: alert when a card drops to your target, or when someone undercuts one of yours • Saved searches and buy targets: paste any COMC search URL, get alerted when new cards appear or when the lowest price hits your number • Weekly digest: your week in one alert • Unread count on the toolbar icon; optional desktop notifications SHARE • A branded stats card of your win rate and best flips, with dollars optionally hidden PRIVACY Everything is stored in your browser. There are no servers. The only network requests go to comc.com (your own exports and pages) and, if you choose to send a support ticket, penthousegrove.com. Fonts and code are bundled. Not affiliated with COMC. Free, no ads, no premium tier.