I'm surprised but that does seem to be roughly the market price for those machines.
Personally I wouldn't buy one--starting with the 2011 models, they basically got twice as fast, and starting with the 2013 models they basically got twice the battery life.
The market value for a used 2013 MBA on eBay is roughly $600... so for an extra $200 you get twice the speed and twice the battery life, and I think twice the storage too although I forgot to check.
The market value for a used 2013 MBA on eBay is roughly $600... so for an extra $200 you get twice the speed and twice the battery life, and I think twice the storage too although I forgot to check.
I actually bought this summer a 13" MBA 2010 2GB/128GB for $375 as a second machine for traveling as my 5 lbs 2012 15' MBP is too heavy to carry around. Since I only use the MBA mostly for email and browsing, it works fine for me. I have even now El Capitan public beta running on the MBA. Battery life is close to 7/8 hours. Overall I am happy with it as I didn't want to spend double the money. Downside of the 2010 is indeed the slower processor and no backlight keyboard (not an issue for me).
As for your buy: the 64GB is very limited, you should have a minimum of 128GB. Of course spending more money gets you a better machine, but you have to weigh different options. If it is going to be your main machine I would for sure go for a newer one. Even a 2012 gives you a good machine and the SSD is upgradeable. See if you can find a 8GB RAM.