Rakuten has a couple of GTX 1080 models available from $486 after coupon code SAVE60

NOTE – GPU prices are headed up due to VRAM shortages and price increases…
https://youtu.be/yAttQSZ4wrI?t=37m10s
Blower style $486 after coupon:
Gigabyte Ultra Durable VGA GV-N1080TTOC-8GD GeForce GTX 1080 Graphic Card – 1.66 GHz Core – 1.80 GHz Boost Clock – 8 GB GDDR5X
https://www.rakuten.com/prod/307205071.html
3 fan – $492
Gigabyte GV-N1080WF3OC-8GD GeForce GTX 1080 Graphic Card – 1.66 GHz Core – 1.80 GHz Boost Clock – 8 GB GDDR5X – PCI Express 3.0 x16 – 256 bit Bus Width – Fan Cooler – OpenGL 4.5, DirectX 12
https://www.rakuten.com/prod/300404653.html
Water Block – $506 after coupon
GeForce GTX1080 Sea Hawk EK X – GTX 1080 SEAHAWK EK X
https://www.rakuten.com/prod/300077650.html