I am looking to purchase an authentic david yurman bracelet on ebay and I noticed alot of sellers selling brand new david yurman pieces at discount prices? Are they reputeable. They seem like power sellers with good feedback but I wonder how they are able to sell so many brand new david yurman pieces at discount prices. I have stayed clear of tiffany jewelry on ebay as out of the 8 pieces i purchased only 2 were authentic. Can anyone help with suggestion of sellers for dy. Thanks