I live in Europe, in August I'm visiting NY. Is it possible for me to buy a refurbished (r)mbp online(since they did not update the mbp at WWDC, I'd go for a refurbished

)?
I'd choose the ship to store option, but here's the deal; how long will my product stay at the store? Because I believe I have to pay in advance? Will it stay in the store until I pick it up?
Say I see a good deal next week, I order it. Will it still be available for me to pick up in the first week of August? Or do I have to wait until the end of July/begin August, hope for a good refurbished machine and then order it?
Thanks in advance