Of note, Trans Intl. also has the ProStor 635i 1TB eSATA / FireWire 800 / USB 2.0 External Hard Drive for $138 plus $8 for shipping ($0.15/GB). That's tied with last week's mention and $13 under the lowest total price we could find for a similar drive elsewhere. (See the drop-down list at the bottom of the page.)
Note that these drives are designed to fit under an iMac base, but can be used with any Mac or PC.