As others have said, I think I’ve only ever lost out once selling some car wheels and someone wanted to end the auction early. Annoyingly no one else bid after that so presumably I’d have made more money selling to him.
Why he didn’t just bid I’ve no idea.
I don’t often bid early as that just drags yu into a bidding war
Even less incentive for the seller to end it early. I think eBay would actually make more money if they only allowed existing bidders in the last 5 minutes, either that or cut the pretence that it’s a live auction and just allow sealed bids and sell to whoever is highest.