Here's an Electric bike o inspire thought.
This bike is very High spec with Heinzmann motor kit with light weight Lithium Battery Fox front, Dt swiss rear shock, Mavic Rims, shimano SLX running gear and Magura hydraulic brakes all round.
This is an awesome bike and is a custom build. The cost varies from bike to bike as the specification of components are so variable - Do you want £500+ Fox forks? There are many variations on each component.
This particular bike above will be in the vicinity of £3900
Click here to see info on electricgoatbikes.com website.
Interested ? - Contact - 01458 550304