I bought my Macbook Air for $1,629 in June of 2012. It's still my main computer and I've spent <$300 (new battery, charger, etc) since the initial purchase.
I'm not easy on computers. I travel a lot and this think has put up with very poor treatment. I can't think of a better computer for me. After this one dies I'll definitely buy another Mac (not thinking about which one because I'm expecting this to last at least another year). I hope I'm not disappointed because this computer exceeded my expectations for a laptop.