You get this price with the attached voucher code and standard royal mail delivery! Cheaper if you collect! You have to put the voucher code into the 'comments' box at the checkout.
Not a deal for everyone, but certainly among us car pc enthusiasts, and those of you who want to turn your laptops into cheap sat nav devices! (With the right software)
"The WAAS enabled BU-353 GPS Receiver can be utilized in a variety of applications that may require a magnetic mounting with a waterproof configuration. With non-slip on the base and its compact design, the BU-353 is completely self-contained and waterproof. It incorporates the latest SiRF Star III GPS chipset and an active patch antenna so you receive the highest degree of GPS accuracy. Typical application may include, but not limited to marine, aviation, and commercial environments in such uses as fire truck, police cars, buses, utility & long haul vehicles. The extended 5 feet long cable allows for easy routing behind headliners and side panels to terminate at a USB connector for interfacing with your Laptop / ibook. / PowerBook."