How much could I sell this for on Ebay?

[TheGermanAshton]

Well, about 8 months ago, I purchased a macbook air for writing and schooling. I no longer need it, and I need to sell it for the money. This is the exact model information

http://www.everymac.com/systems/apple/macbook-air/specs/macbook-air-core-i5-1.3-13-mid-2013-specs.html

So, my question is, how much do you think I could get for this on Ebay? There are no scratches, nicks, anything. It looks like it is right of the box. I've not used it much at all. Thoughts?

 

[ThatVietGuy]

I'm guessing at least $650-700.