Hi there, I almost bought the Air from BestBuy, but I ended up with the MacBook Pro instead, the 2Gb MacBook Air was simply not an option for me and I know we as users cannot upgrade the RAM ourselves. If in fact BestBuy had stocked the 4Gb model, I'd very likely have purchased it instead.
But honestly, the only thing I really wanted to have as a must, was 4Gb Ram.