evga has a the gtx 590's for sale
they have quad sli packs in regular and hydro copper, and single regular and hydro copper.
I got mine, the regular gtx 590 at $730 US.
btw. evga factory overclocked them. 630mhz gpu, 3456 mhz ram, 331.7 gb/s memory bandwidth
gigabyte g1.sniper 5 mb, 8gb ddr3-1866 mhz ram in dual channel,intel core i7 4790 3.6 ghz quad core cpu, asus gtx 780 3gb vc,OCZ vector 150 240 gb ssd x 2 in raid 0 (intel raid),antec hcg-850 850 watt 80 plus bronze psu,corsair carbide 500r white case,pioneer bdr-208 15x bluray writer, steelseries 6gv2 keyboard ,acer gv215hv 21.5 inch 1080p lcd monitor, zalman eclipse 8200dpi mouse,xbox 360 wired controller for windows,kingston 8gb usb 2.0 flash drive,windows 8.1 64 bit,creative labs sound blaster zxr pci-e sc,logitech s120 2.0 speakers
I'd rather walk with God in the Dark than shine in the light alone.