Newegg.com has the Western Digital My Book Essential WDH1U7500N 750GB USB 2.0 External Hard Drive for $145 - $25 instant savings = $120 only

List Price: $144.99
Mail in rebate /Discount: - $25.00
Sales price: $119.99 + Free shipping
Price After Rebate: $N/A

Technical Details:
Model
Brand Western Digital
Series My Book Essential
Model WDH1U7500N
Performance
Interface USB 2.0
Capacity 750GB
Physical Spec
Form Factor 3.5"
Dimensions 6.5" x 5.4" x 2.1"
Weight 2.5 lbs.
Features
Features Easy to set up, easy to use - Installation is a snap because you don't really install this drive, you just plug it in and it's ready to use.
Fits right in - Takes no more space than a paperback book. Collect two or more and they nest neatly together like volumes on a shelf.
Smart and energy efficient - Turns itself on and off with your computer.
PC and Mac compatible - Works with both Windows 2000/XP/Vista and Mac OS X 10.4.8 or later

Link to the buy: Newegg.com
Rebate form: N/A