| Player | Year | Sport | Brand | Parallel | Grade | Cost | Value | eBay Sales |
|---|
Live sport indexes + AI-powered market brief
Cert lookup · Population data · Card search · Powered by GemRate
Enter a PSA, BGS, SGC, or CGC cert number to pull grade and population data for that specific slab.
Search for a card by name to get full grading population data — gem rates, grade distribution, and total graded counts across all major graders.
Click any graded card from your collection to instantly look up its cert data on GemRate.
Upload your CSV to load your collection. Add image URLs to the photo_url column to display card photos.
| Column | Example | Notes |
|---|---|---|
| player | Mike Trout | Required |
| year | 2011 | Card year |
| sport | Baseball | Baseball / Football / Basketball / Other |
| team | Los Angeles Angels | |
| brand | Topps Update | Set/brand name |
| card_number | US175 | |
| parallel | Gold Refractor | Parallel or variation |
| serial | 50 | Print run (e.g. /50) |
| rookie | TRUE | TRUE or FALSE |
| graded | TRUE | TRUE or FALSE |
| grading_co | PSA | PSA / BGS / SGC |
| grade | 10 | Numeric grade |
| purchase_price | 1355.19 | What you paid |
| purchase_date | 2026-05-05 | YYYY-MM-DD |
| current_value | 1355.19 | Estimated market value |
| photo_url | https://i.ebayimg.com/… | eBay or any image URL |
| notes | PSA 10 Gem Mint RC | Freeform |
Manage your account and configure integrations. Your settings are stored locally on this device.
Used to automatically find card images from eBay listings. Completely free — takes about 5 minutes to set up.
How to get yours: Visit developer.ebay.com/my/keys, sign up for a free developer account, create an app, and copy the Production App ID here.
Unlocks cert lookup, population data, and gem rate analytics.
Get your API key at gemrate.com/partner. If this field is blank, the site uses the shared server key (if configured).
Upload a grading data sheet to see which cards in your collection are worth sending to PSA. Ranked by profit potential after grading costs.
or click to browse
sport card_name raw_avg psa9_avg multiplier psa10_avg
— download template for the exact format.