These bikes are rented in the US AFAICT, costing up to $50 per week in five major cities or so, and not for sale. Doubt some of the comments are from any type of informed source. If you read this forum regularly you'll discover that many individuals have good experiences with DIY and less expensive bikes. Probably you'll get better info on Zoomo elsewhere (maybe pedelecs.co.uk if they're sold in the UK).