I never understand why a buyer with a good account history ghosts the seller and never pays. 5 days is the most I give a new buyer to pay if they have not contacted me and arranged a delayed payment. I have a bit more leniency for repeat buyers as sometimes they are bidding on other items. If you cancel after 5 days buyer not paid also block their id. Don't give new buyers who don't contact you any longer than that to pay.
Unlike BIN with immediate payment required where you know the buyer is sitting at the computer or on their phone making the purchase that very moment you never know with auctions which can run from 3-10 days. Of course there are the sport bidders who have nothing better to do and consider it fun but there are also understandable situations. If the bidder placed their bid early there a million things that can happen between the time they placed their bid an the auction closes.
About 178,000 people die everyday around the world, many more are involved in accidents, many have medical emergencies and wind up in the hospital, there are countless family emergencies and then of course natural disasters. If the buyer is not responding to you it may be that they can't. Buyers who don't pay are not all doing so for malicious intent.
