$529 here that's for a 9.7 Pro that's just $30 more than a $499 iPad Air 2 was a few months ago. For double the storage and A monster CPU.
Now $760 for a dubious 12.9 Pro from eBay. Besides all the red flags there I'll say this.
The 9.7 Pro is the best tablet on the market period. It's no laptop but it's a great tablet.
The 12.9 at any price fails to be a tablet and fails to be a Laptop.