RarityFinder Beta - AI-powered investment scoring for eBay collectibles

As a lifelong baseball card and comic collector, I’ve spent hundreds of hours on eBay hunting for great deals and long-term value. After working in the data world for 18 years, it always felt obvious that this process was broken. Finding real investment-grade collectibles meant manually checking past sales, seller credibility, demand, and trends across multiple tools. Rarity Finder was built to bring all of that data into one view — saving time and helping collectors make confident, data-backed decisions instead of guessing.