New for only USD$750? Nope, you're about 9 months too late. You can buy it used on Ebay for around that price. I wouldn't recommend it though because even though the synthetic benchmarks are spectacular, real world game play is reported to have noticeable micro-stutters with many 2014 and 2015 titles. AMD isn't supporting it with driver updates anymore to my knowledge.
Best bet if you're only interested in AMD is to wait for the R9 395x2. I have no idea when it's releasing but I'm guessing before Pascal does. Or you could simply purchase and crossfire two R9 390's, which is in essence what the 395x2 will be but on two PCB's instead of one. In order to pull that off, you'll need at least a 1,000 watt tier 1 or 2 power supply...