We bought the pair of 16" fat tire bikes just over a month ago. In that time, I've put about 70 miles on mine. Bikes were a bit difficult to put together. The first took about 3.5 hours and the 2nd took about 2 hours due to learning from the 1st. There were some difficulties with one of the bikes but seller offered prompt support. Replacement parts and small refund were promptly offered. I'm big on customer support so, even though there were problems, I think a 5 star review is still warranted.
I test drove quite a few e-bikes before making this online purchase. These aren't as comfortable as some of the other bikes I tested but they are far cheaper. With the savings, I upgraded to a larger, padded, seat and that helped immensely. I'm a big guy and these bikes have no problem pulling me up a hill or keeping their charge. With pedal assist, I can bike over 10 miles and still have over half a charge left on the battery. If using pure power without pedaling, the battery drains much quicker, of course. The electronics are straight-forward and easy to read. The physical gears are largely unnecessary, in my opinion. The electric gears for power assist took about 2 days to fully master. Since that time, they work great and allow for 20 m.p.h travel with very little effort.
For the price, I'm very happy with the level of comfort, power, and customer support. If you are looking for a midrange price on a solid e-bike, I think you will be happy with this purchase. Just remember, these bikes are a bit larger and heavier than they appear in the picture, so I wouldn't recommend for smaller-framed folks or anyone under 4'2" as the bike might overwhelm you. Best of luck!