you should buy the item.. how long did it take for him to contact you? I sell on ebay and when an auction ends i do NOT contact the winning bidder, ebay takes care of that for you, i just wait for them to complete their checkout and tranfer the money through paypal. I send ship their product and ONLY e-mail them to give them their DC#... only other reason i will e-mail is if they e-mail me with questions or asking for updates.
Though most ebay sellers say this, not all do.... BUT i always assume it anyway, that all auctions are good for 7 days, and you have 7 days to transfer payment for your bid. Most ebay sellers contact 3-4 days after auction ends if payment has not been recieved, not just 1-2.
I know it sucks but you should pay for the item, and next time pretend you are broke before you bid LOL.