Posted By:
Scott Elkinsjust before you click "comfirm bid" that states you are entering into a legally binding contract. Also stated is: "YOU are responsible for reading the full item listing, including the seller's instructions and payment methods.". Sounds very clear to me. Also, sounds like (according to eBay), that, by law, one will have to follow the seller's instructions should he/she win the auction. The credit card matter really sounds like that one is between the seller and Discover - not really a legal issue unless Discover decided to do something about it (which they would not in such a small matter, as it would be very costly for nothing).
Also, as I have done with Larry Fristch (instead of wasting my time and money returning items), - do not bid or buy if you do not like or accept the seller's practices.
I really don't see where the seller is breaking the law myself - he states his terms. If you like them - bid, If you don't like them - then do not bid (because when you bid, you are entering into a contract with the seller to abide by HIS/HER terms). It seems to me the minimum charge amount issue is more of a matter between the seller and Discover.