Felix I prefer this page from their web site
http://www.techtwin.com/eng/catalog/misc.htm I got a quote from them april last year
"Unit price for UK clients is ; 20.90 euro
shipping cost is 15 euro
payment on ordering by Credit Card
availability within 2 weeks
regards
Fabien"
But in the end I got mine from a BMW car place in Belgium as it was just down the road from my Sisters, and as my parents were visiting her shipping didn't come into it.