Amazon has the Western Digital WDBAAR6400ABK-NESN WD Elements 640 GB USB 2.0 Portable External Hard Drive for $85 with free shipping.
Product Features:
- Easy to Use - Just plug it in and it's ready to receive your data.
- USB Powered - These drives require no power adapter--they are powered directly through the USB cable.*
- Compact Design - Weighing in at only a few ounces, these tiny drives fit easily into pocket or purse.
- Reliable - All WD drives, even our most basic products, are designed to protect your data and put through a comprehensive battery of tests before they are ready for market
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Technical Details:
- Brand Name: Western Digital
- Model: WDBAAR6400ABK-NESN
- Hard Disk Size: 640 GB
- Warranty: 1 year warranty
- Hardware Platform: PC, Mac
- Hard Disk Description: External hard drive
- Width: 3.1 inches
- Depth: 5 inches
- Height: 0.6 inches
- Weight: 7.1 Ounces
Amazon.com: Western Digital WD Elements 640 GB USB 2.0 Portable External Hard Drive WDBAAR6400ABK-NESN: Electronics
Western Digital WDBAAR6400ABK-NESN Elements 640GB USB Portable External Hard $85 + FS 
