TigerDirect offers the Ultra Limited Edition 450-watt ATX Power Supply
, model no. U12-41526, for $19.97. This $10 mail-in rebate
cuts it to $9.97
. With $4.89
for shipping, that's $30 off list and the lowest total price we've seen for a 450-watt power supply. It operates at 72% efficiency and features a 120mm fan, one PCI-Express connector, two Serial ATA connectors, and more. Rebate expires July 31.