Even for $750 I wouldn't touch it. Apple has basically neglected this machine for whatever reason and has pushed the 12in MacBook instead. No reason why the Air can't be bumped up in spec and still sell. The 12in MacBook seems pointless when it's running a mobile chip and you can get an iPad/keyboard combo. I dunno what Apple is thinking.
People want a laptop with ports (not just that bullshyt USB-C shyt) and the ability to bump up their RAM/SSD if they want to.
I think the Air can be a viable machine but it needs a refresh, including no more silver bezel/thinner bezel, Retina display, and at least a 500GB SSD as an entry level model because this 128GB SSD shyt isn't cutting it in 2017. I just got a 13in pro on sale and can't wait to find a deal on a SSD to swap. It's crazy that SSD prices simply aren't falling fast enough