What is their policy on exchanges? For instance, if I wanted to exchange my 13" and upgrade to a 15"? I looked on their website and they don't talk about exchanges. When I bought the 13" a few hours ago I asked the associate that was working there about exchanges and he told me that I could do it without a re-stocking fee. But I'm not entirely sure if he was saying that truthfully or not just so he could get the sale. Whats your experience with best buy? Did they allow you to exchange it and upgrade even if the box was open? Or did they hassle you and charge you a re-stocking fee? I would greatly appreciate it. Currently looking at this rMBP is killing me and I want to at least use it for a few days to see if I want to upgrade to the 15" model or not.