Ok so here is the running total so far -
£100 - Bike, hydraulic brakes, front suspension
£100 - Yose Power 48V 13A Battery
£60 - Bafang G020.250.DC 13 Motor on a 27.5" rim
£77 - 17A KT Controller, throttle, brake sensor, LCD3 display etc
£27 - Schwalbe Marathon plus MTB Tyre
£4 - Schwalbe...