Iomega eGo II 320GB 2.5" USB Portable Hard Drive for $49.99 shipped as listed.  Here is a screenshot example for your reference.  This 320GB portable drive is USB powered and does not require an external power supply.  It is also smaller than most external drives, making it more convenient to carry around.

• Iomega eGo II 320GB USB Drive (Jet Black) for $49.99 shipped after code 8P05$97LFK?0BZ
• Iomega eGo II 320GB USB Drive (Ruby Red) for $49.99 shipped after code $ZXW68F3VF97C6
• Iomega eGo II 320GB USB Drive (Flamingo Pink) for $49.99 shipped after code R1T?K6NK2P9?W0