If you end an eBay auction early when there are bids, you'll be charged a fee equivalent to the final value fee you would have paid had the auction ended normally and sold to the high bidder.
I’m 100% against AI descriptions because they are almost always 100% wrong. If you aren’t sure about a knife, it’s provenance or authenticity, I always recommend full disclosure in a seller written description to be totally honest to a potential buyer. The AI descriptions have become a sellers excuse to allow a bad description like yours (it’s a folding blade, not a fixed blade) to exist.
Good luck!

