Both Newegg and Amazon have the Seagate 4TB NAS hard drives listed for $170 + free ship with Shoprunner / Prime.
http://www.newegg.com/Product/Produc...pk=ST4000VN000
http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER
Seeing as the 4TB WD Red's going for $200, thought this was pretty good.
http://www.newegg.com/Product/Produc...pk=ST4000VN000
http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER
Seeing as the 4TB WD Red's going for $200, thought this was pretty good.