With the current dollar pound exchange rates I've been doing a bit of ordering from the states this week. I decided to order a set of the system case reflectors and a roll of red reflective pinstriping tape from http://www.reflectivedecals.com/ for a grand total of US$36 (which is UK£18.99 charged to my Paypal account at time of order). Don't know what they might charge me in import duties but there's a fair chance that it will be ignored at that value if it comes by post rather than DHL (and at US$3.50 for postage that's probable). If I'da thought harder I'd have placed two orders and kept it under the UK£17 limit for duty...
I must say that I'm very impressed how this thread has "quite liderally" turned itself through 180 degrees from front lights to back...