Get It Now From Fry's Electronics
The high-speed L01F500 Maxtor is capable of transfering up to 3.0 Gb/sec, featuring a 16MB cache and an FDB motor for quieter operation. The bundled MaxBlast software will help you to easily format the drive and create the partitions. The drive comes in retail packaging, with everything you need: SATA cable, power adapter, screws, setup guide and software.

It sells for $89.99 with free shipping, that's only 18 cents per gigabyte.