This deal has ended.
Buy.com has the Simpletech 4gb Bonzai Xpress USB 2.0 Drive for $22.95 after a $25 mail-in rebate valid through 3/31. Plus, shipping is free and there is no sales tax (except CA, MA, MD, TN). This is one of the best deals yet on a 4gb drive. These little USB drives are great: keep one on your keychain and use it to backup and transfer files on any computer.