mwave offers the Buslink 160GB USB 2.0 Portable External Hard Drive, model no. DRF-160-U2, for $54.99 with free shipping. That's $0.34/GB and the lowest total price we could find by $125. According to Buslink, this drive has two RFID sensor cards that should both be activated when the drive is used for the first time. The drive is secured by the RFID sensor cards and features 128-bit encryption.