Best Buy via eBay offers the EVGA 600-watt ATX Power Supply, model no. 100-W1-0600-K1, for $34.99 with free shipping. That's the lowest total price we could find by $15, although we saw it for $5 less last July via store pickup. This 80 PLUS PSU features an intelligent auto fan, two PCI Express connectors, and six serial ATA connectors.