I mean I can buy a whole hyper bike for 400 bucks including shipping , they want 200 bucks for a extra battery , and can I get a whole bike for $400 ,what to do, I get my extra battery in a whole new bike what to do ,I've seen some of these end up on Craigslist or marketplace people trying to sell them after they get them unused , And you're lucky to get 300 bucks out of them , People say well you can get them at Walmart for 400 , Yeah I tried to sell mine but decided to keep it , Because people can get them so cheap the only selling point is just tell them that they don't have to assemble it it's already put together , And you have to adjust the derailer yourself it doesn't come fully adjusted ,