Newegg offers the Corsair CX Series 600-watt ATX Power Supply, model no. CX600, for $56.99. Redeem this $20 mail-in rebate for a final price of $36.99. With free shipping, that's tied with our August mention and the lowest total price we could find by $18. This 80 Plus Bronze-certified PSU features a 120mm fan, two PCI Express connectors, and six serial ATA power connectors. Rebate expires October 10.