I bought this lens (17-40L) from this guy who says he mounted it twice. He said that he prefers his 24-70L over it, and that he is a pro. He stated t=in his ad he seldom uses ebay and to email (using the contact member link on ebay) him with any questions. His feedback is 2, 100%. Well, i won the auction on Thursday. The auction stated "free shipping" via UPS ground (4-9 business days). I emailed him asking if i pay like $10, if he can ship via USPS so i can get it about the same time i get my camera (wednesday). He finally gets back to me yesterday with a Steve Jobs type answer. "Yeah, i can do that". I told him to include a new invoice (he hasn't sent me one) reflecting this extra shipping charge. Hasn't happened. I paid yesterday, still the paypal transfer is unclaimed. It says that his address is unregistered. Do i need to cancel this asap? I have 112+ feedback, 100%. I have been lucky and haven't been hosed, but then again i haven't really purchased high dollar items on ebay. Any help is appreciated.