Just found a used (May 2011) 13" MBA on craigs list... I'm interested in getting it but, I'm not to sure. http://hattiesburg.craigslist.org/sys/2581259480.html I've txted with the guy a few times and he stated he bought it from BestBuy in May and that there is currently no AC on it. I asked if it was available to get it added and he said yes. Besides looking at it and seeing anything wrong with it, would this be a good buy? He's unsure of the price he'd go down to. I see Apple refurb has the exact samething but, a 2010 model for 999. I'm on a budget and will be selling a Dell laptop and would have to add 300-400 to it get it. I'm unable to save up and the Dell laptop is sold as soon as I format it and reinstall (this week). So I need a replacement soon. Opinions on what you might do?