ZipZoomfly.com offers the OEM Western Digital Caviar Black 750GB Serial ATA 3Gb/s Internal Hard Drive, model no. WD7501AALS, for $79.99. This $15 mail-in rebate cuts it to $64.99. With free shipping, that's $0.09/GB and tied with last month's mention as the lowest total price we could find, this time by $11. This 7200 rpm drive features a 32MB cache. Rebate ends November 10.