I have noticed you have posted about our Dynamo USB Charger. Just to let you know, we are now selling these for £10 each, including postage and packaging. We have successfully tested them on numerous rides, to charge GPS devices, Phones, MP3 players, and PowerMonkeys. We have also posted information on how to make them yourself, including circuit diagram and components used.

If you have any questions about our charger, reply here or email us, and we will be happy to help you.

Our website:
http://www.rad-uk.com/bicycle-usb-charger-shop/