Well the EL MOD guys don't mind me selling world wide so you can compare my prices with theres!

To upgrade to EL MOD & Sound keeping the stock radio would be $133.20 for the Booster/ TLS/ HL (M) for metal gears

Then you need to add the Blaster II and that is $ 139.00 with high end speaker!

Total with shipping to England = $ 282.20 USD

The Blitz

http://www.rctankwars.com/products.php

Here is the EL MOD site out of Germany

http://www.el-mod.de/