I currently have a 2.26 gig uMB and there is a 2 gen Macbook air on craigslist locally. Its a 1.86 gig 128 gig SSD... It comes with a superdrive and I talked the guy down to $650. My question is about HD space in the future is they a chance a 256 gig SSD would be available or can you get one in it now. This is the 2gen and was purchased in Oct 2010.