I've had like a 17 lens EF system through 5 generations of bodies, 3-lens Contax G2, 3-lens Mamiya 7, SL66, and a nice Leica M6 outfit, since the mid-90s. I haven't EVER been able to use a warranty on any of it. The only malfunctions I've had are due to dropping Leicas, which isn't covered. Nothing else has ever broken.I've sold a few items person to person, and yes I do generally get more for it that way. But I prefer to sell to a reputable secondhand dealer even if I get a lower price. It gives me peace of mind, because I know that the next owner will have a repair guarantee from the dealer, if the gear develops a fault, and that's something I can't provide personally.