I've found that individuals who rate products on Amazon are very picky. Some items that I think are fantastic only average four stars (of five); yet if you look at Ancheer e-bikes, the average for all of the ones I looked at was four plus stars. Somebody is happy as well as all the people I saw at the park Sunday enjoying their inexpensive e-bikes (didn't see nary an OEM mid-drive). There were at least a couple of individuals on $349 Swagtron (AFAIK) e-bikes from COSTCO having a blast.