I had one and sold it. I think there was a MAP price drop at some point. I got mine as a combo from Primary Arms with an adm mount for about $1K. I decided to get rid of t as it was just too much glass for my needs. When I listed it I realized that NIB ones were going for $750 from retailers. I see people asking $800+ for them in the EE and I just don't get it. I ended up flipping mine in the EE for $725 PLUS free shipping. I had the box, paperwork, ADM amount, scope (which was in 9/10 condition). I took a haircut on it.
The scope is great, but unless you're shooting long range you may be better served with a 4-16. The quality was definitely top notch. It matched up with my old Nightforce NXS 4-16 quality and I didn't notice a major difference until I got up into 20-24X, where it got slightly blurry along the edges. Vortex warranty is also unbeatable.
TLDR: People selling them for more than they're worth. Nice scope, you'd be happy with it.