Even though it's kinda not the same, when I bought some parts for my pc, the memories weren't working properly. I had to send them back to the store (through UPS) and when they sent me some new memories they weren't working properly as well. Sent those back too and they finally sent me some good ones.
Both of the times I sent the memories back, the store paid the costs of the transport. Dunno if Amazon also does that though. x: