Buy.com offers Western Digital Passport Portable 120GB USB 2.0 External Hard Drive $89.99 with shipped 
This item review:
It works perfectly fine. Very sleek. Performance is good. But the USB cable(about 5 inches) is not long enough. Overally, it's a WD disk. Much better than other no name branded portable disks. You want to store your important data on a reliable disk.
Product Summary
Instantly add portable storage for all your business files, music, videos, and games with a WD Passport Portable Hard Drive. With capacities up to 120 GB, this compact drive weighs only a few ounces and holds tons of valuable data that can be easily shared between office and home, or between Macintosh computers and PCs. Because the drive is powered directly through the USB cable, there is no power adapter to carry. WD understands the importance of the information on your drive so weve designed an elegant and rugged enclosure to protect the 2.5-inch WD hard drive and the data on it. Includes synchronization & encryption, and Google software.
Features
| Ultra-portable; fits easily in your pocket or purse | | 2MB Cache | | Powered by USB bus; no separate power source needed | | Fast 5400 RPM hard drive | | Includes synchronization & encryption, and Google software |
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