I am also answering you in a private email, but just wanted to post something here as well.
I can send via USPS First Class mail which is the slowest method with no tracking/insurance and it gets handed off to the local government mail service on the other side of the pond. Looking up the price, it comes to $12.75 to ship a small box to the UK via First Class from zip 80919 in the USA.
That's the absolute best I think anyone will be able to find that doesn't have a super awesome giant corporation account.
Fusion Brain Version 6 Released!
1.9in x 2.9in -- 47mm x 73mm
30 Digital Outputs -- Directly drive a relay
15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
Buy now in the MP3Car.com Store