This is utter nonsense. I don’t know why people on here are saying this stuff. It’s 100% normal to pull out of a sale. Refund the sellers fees if that makes things easier, but there is 0 obligation - it’s eBay, not a court of law. And if an item costs £1000 then even more so. Seller must understand they can’t sell something for £1k without people wanting to see it before paying and without the possibility that delivery/palleting etc falls apart.
Sellers routinely pull out of an auction cos they got a great offer. Buyers routinely make offers. Sales fall apart after the auction. Ignore anyone who says otherwise - they don’t know what they’re talking about. It’s even an option on the eBay drop-down list of ‘problems with the sale’. If eBay offers it as an option it’s most certainly not against their ‘terms of service’ or the ‘rules’ or any other legal-sounding phrase that people are using to scare you.
Personally I’d only buy something that expensive if I could go and look at it. But if you’ve won the auction the balls in your court. You can pull out at anytime if you’re not happy. It’s the sellers job to ensure this all goes through by helping and communicating. If they don’t they’ll lose the sale. Simples.
A seller can list and sell whatever they want so long as they comply with the conditions of selling. They have no obligation to 'understand they can’t sell something for £1k without people wanting to see it before paying'. Value is subjective anyhow. Yes, technically a buyer can pull out anytime they want but if the seller is upfront and there are no extenuating circumstances or an issue with the item being sold then that's just a crappy move.
Contracts are based on an offer, due consideration, an acceptance of that offer and the implied subsequent intention to create an effective legal relation concerning that offer. It could be argued that ebay delivers that process and that this is sufficiently understood by participants on the website, you agree to the T&C's of the auction process and accept you understand those when you join. Enforcing ebay contracts however is clearly not easy else the web would be full of legal battles being fought and played out on social media. It ultimately requires a need to evidence loss which is fairly moot in most ebay auctions. Also distance selling introduces geographical jurisdiction issues in itself.
In short, it is possible to legally enforce a winning bid on ebay (albeit not with in the ebay system), just little point in doing it. Ebay works because of trust between seller and buyer. Once you start talking legal threats, there is little pragmatic recourse but to just both walk away from the sale and possibly ebay for that matter.