Corsair HX Series 620W Power Supply for $84.99 After Rebate

Corsair HX Series 620W Power Supply for $134.99 after a $50 rebate.  Shipping charge is free so the final price is $84.99 after rebate.  This power supply features include a 120mm silent fan, 80% efficiency under load, SLI support, modular cables and 5 years warranty.  Other sellers sell it at $159 or more.