Vizio M70-D3 70" 4k Display - $1,749 - Costco, vizio.com
HDR : Yes
Tuner : No (for those who care)
3D : No (again, for those who care)
Costco $1,749: http://www.costco.com/Vizio-70%22...00989.h
Vizio.com $1,709 (YMMV): https://www.vizio.com/tvs/mseries/m70d3.html
Also available directly from Vizio.com for $1,799, free shipping. If you clear your cookies, you should be able to get a pop-up for an email signup for a 5% off coupon, bringing the total to $1,709 shipped (if sales tax doesn't apply for you, it didn't for me).
BestBuy.com $1,799 : http://www.bestbuy.com/site/vizio...Id=4859
If you can use the BB 10% movers coupon that'd be solid, but after BB sales tax the vizio.com deal is likely better with no tax.
Amazon doesn't carry this set for some reason, but you can see the excellent reviews on last year's M70-C3 there.