TigerDirect offers the Western Digital 3TB Red Serial ATA 6Gb/s Internal Hard Drive, model no. WD30EFRX, for $139.99. A $30 mail-in rebate and a $10-mail in rebate cut the price to $99.99. With around $4 for shipping, that's $0.35/GB, $10 below last month's mention, and the lowest total price we could find by $30. It's optimized for use in NAS systems and features a 64MB cache. Deal ends January 24.