If you got your tickets from a seemingly reliable source with a good rating (98%+), you should be good to go. Most of those guys are not willing to jeopardize their ebay status just to make a profit off of one pair of phony tickets. I got a few pairs off of Ebay for friends, and they are identical to the ones that Ticketmaster sent me. Sometimes E-tickets are risky, but again, if the seller has a near-perfect or perfect rating, he or she is probably not willing to risk their selling status for one scam.