i have a bike built with an electric kit bought online for $250. $80 for the bike (used 90’s vintage trek true temper steel), 250 for the kit… too bad it came incorrectly wired and subsequently fried the moment i connected the battery. i got my money back with a cc charge dispute. i still haven’t gotten around to testing the battery and motor controller for functionality… gas prices came down and the total weight is a lot. a bit inconvenient for climbing texas hill. or stairs.