I just made my first purchase on ebay, won the bid, paid 175 for the original canon ef 50mm f1.8 (the metal mount 50 f1.8) through paypal. Then on advice from one of the more seasoned ebayers at work, I tried to email the seller just to fyi them that the goods had been paid for and thank you very much i look forward to getting the lens, etc. None of the emails got through, all were returned. So now I'm worried. Am I just paranoid? Everyone I know at the office with ebay buying experience has gotten their goods, but I'm just a little worried.