Buy.com offers the
Cavalry 500GB USB 2.0 7200RPM External Hard Drive for $79. That’s a savings of $65.91 from the regular price of $145.90. Free Shipping on this too. A great way to store all your music, movies, and photos.
Buy.com also offers the
500gb External Hard Drive for $64. we listed yesterday, but this item is refurbished. [...]

Click here to buy this deal. 

Buy.com has the Fantom Drives Titanium II 500gb USB 2.0 7200 RPM external hard drive for $64.99, after after a $20 rebate. It’s a refurbished unit. List price on this unit was $119, so this almost half price. Good, Fast, Cheap Storage. 
Click here to buy this deal.