Trans Intl. also offers the Seagate Momentus XT 750GB 2.5" SATA 6Gb/s Internal Solid State Hybrid Drive with 8GB SSD, model no. ST750LX003, installed in the same enclosure for $188 plus $8 for shipping ($0.26/GB). That's a price low of $20.
Click here for more information about hybrid hard drives.