Newegg.com has the Antec NEO ECO 620C 620W Continuous Power ATX12V v2.3 / EPS12V 80 PLUS Certified Active PFC Power Supply for a good price.

Regular Price : $79.99 Shipped

1. Newegg Price : $54.99 Shipped
2. Rebate Price : -$15.00 ( Exp : 05/31/10 )
Final Price : $39.99 Shipped After Rebate