Newegg offers the Corsair 430-watt 80 Plus Bronze ATX Power Supply, model no. CX430, for $39.99. This $20 mail-in rebate cuts it to $19.99. With free shipping, that's the lowest total price we could find by $20, although we saw it for $4 less last month. It features a 120mm fan and four serial ATA power connectors. Rebate expires September 17.