My Dorothy Dix tuppence-worth ? .. Earlier I did set a flag that I "liked" that you had recorded a formal Complaint with eBay. I did that because I considered, based on the discussion up to then, that your reluctant Seller was Wrong on two formal eBay counts - 1. That he.she was imposing AFTER the agreed Sale, an improper post-Sale condition not specified in the original terms of your mutually agreed Sale price, and 2. That he/she was demonstrably using that first reneged-upon-Sale to manipulate the ( newly increased ) second Sale price. Both those behaviours are 'illegal' in eBay's system, to my understanding. You should look to the various headings under "Report This Item" ( a tab on the r.h.s.) for the various formal terms under which Complaints may reasonably be sustained. .. Posting Negative Feedback is another Buyer's option, provided you actually have received the item, when Sale terms as originally described are changed by a Seller. .. Now, given ALL that you have written, especially that you now say you CANNOT establish that it was a Scam ( in my view you might reasonably do that ), and that you say it's Not your style, I think you should reconsider Everything. .. As you have NOT got the item, and you would have to be really, really desperate to buy at a higher than $500 price, AND since the Seller may now Know you have lodged a Complaint, even assuming that the Seller is "just an idiot", WHAT is to stop him (extra cash in hand) from tampering with the item that you wanted to buy at a lesser agreed-price previously ? I reckon You have now got yourself into an impossible position with this eBay Seller. .. I'd say just give up, and Keep Looking Elsewhere. That Seller is a dud. You could persist with the Complaint with eBay, but I reckon you'd be daft to try to get the needed item from THAT Bad eBay Seller. .. Good Luck with whatever you decide.