I'm looking to buy a new Canon 5D. Tempted to go ebay, but had a bad experience a couple years ago with a seller who had high pressure ad ons, bait and switch with the lenses, etc. Some of these prices seem to good to be true, but most feedback seems to be good. Anyone had a good experience with a seller they can recommend? One seller has a 5D with a 24-105 IS f/4L, memory card, bag and free ship for about $2800. (Yes, US warranty) Seems pretty reasonable without being wildly cheap and suspicious. HELP!!