Look at the Mtec V4 too, very similar product (derived from MS2) and 495+VAT including a free hour of mapping to get you going, and with pretty good customer support IMHO too to help get you up and running, basemaps supplied for most engines etc.

Ive got an MS2 on my corsa and an Mtec V4 on my clio, and the hardware is SO much better on the Mtec V4, and software is exactly the same.