Just spotted this on Ideal World. You get all the normal advantages of buying from a big mail order company like that (flexypay), plus you get a bike that you have complete control over the programming for speed, power, etc and relatively cheap replacement parts for a crank-drive bike.
https://www.idealworld.tv/gb/pp/byocycle-chameleon-ibexplus-9sp-36v-250w-electric-bike-with-26inch-wheel-469256?query=fh_view_size=24&fh_location=%2f%2fidealworld%2fen_GB%2f%24s%3delectric_bike&fh_sort=-stock_iw
https://www.idealworld.tv/gb/pp/byocycle-chameleon-ibexplus-9sp-36v-250w-electric-bike-with-26inch-wheel-469256?query=fh_view_size=24&fh_location=%2f%2fidealworld%2fen_GB%2f%24s%3delectric_bike&fh_sort=-stock_iw