CTI Store offers the Western Digital Red 3TB Serial ATA 6Gb/s Internal Hard Drive, model no. WD30EFRX, for $149.99 with free shipping. (newegg charges its newsletter subscribers the same via coupon code "EMCXVXM23".) That's $0.05/GB and the lowest total price we could find by $2, although we saw it for $10 less three weeks ago. (Most places charge over $160.) This internal hard drive is optimized for use in 1- to 5-bay NAS systems and features a 64MB cache.