This appears to be the newest version on tomtom site, which is selling for £49.99.
Compatibility list (assuming right product) http://www.tomtom.com/en_gb/products/accessories/antennas-receivers/traffic-receiver-9UUC.002.00.2/
TomTom RDS Traffic Receiver Version 2.
Provides standard traffic formation direct to your device, using TMC traffic sources.
This information is updated approximately every 15 minutes.
Please note that this product is excluded from our 30 Day Money Back Guarantee. This does not affect your statutory rights.
* Please note item 5043062 has previously been on sale at £29.99.
Current selling price valid until 01/03/2011