My wife has decided that since she's retiring and will have more free time, she wants to get a folding ebike. I've had a fat tire BPM for a couple of years so her concerns about how much we would use them have diminished. She set a limit as to how much she was willing to pay. We found a folding Ecotric fat tire for around $800 bucks. The question I have is... has anyone heard of these and if so,how do they holdup?