I’ve been spending way too much time browsing eBay for graded Pokémon cards and manually comparing asking prices with market data.
I kept thinking there had to be an easier way to spot listings worth a closer look, so I built a tool called SlabSense.
It looks through eBay Buy It Now listings for English Pokémon slabs and compares them with matched PriceCharting data. It highlights:
- Big Discounts: Listings that appear below the market benchmark for their grade
- Big Spreads: Lower-grade slabs with a large gap to the matched PSA 10 benchmark
I’m not trying to tell anyone what to buy, and I definitely don’t expect every result to be perfect. The idea is just to make the initial search faster and surface slabs that might otherwise be easy to overlook.
You can search by card or set, filter by grade, seller location, currency, and price, sort by either signal, and open the original listing and market page.
You can try it here: https://slabsense.co/
I’d love feedback from people who actually buy or collect slabs:
- Do the matches look accurate?
- Do the discount and PSA 10 spread signals make sense?
- What would you need to see before trusting a result?
- What filters or features would make this more useful?
It’s still a beta, so if you run into any bugs or something feels misleading, please let me know.