Buy.com has Kingston 4GB DataTraveler 120 USB Flash Drive - DT120/4GB for $12.59 + free shipping.
Features
Convenient — pocket-sized for easy transportability
Simple — just plug into a USB port
Practical — no cap to lose; USB connector protected within case
Guaranteed — five-year warranty
Customizable — Co-Logo program available
Tech Specs
Capacities — 4GB (lime green)
Dimensions — 2.31" x 0.93" x 0.37"
(58.8mm x 23.6mm x 9.5mm)
Operating Temperatures — -32°F to 140°F (0°C to 60°C)
Storage Temperatures — -4°F to 185°F (-20°C to 85°C)
Kingston 4GB DataTraveler 120 USB Flash Drive - DT120/4GB $12.59 FS 
