My first eBike was a Sondors fat bike, with a single speed freewheel. Bought it off Craigslist for $500 and put 1,700 miles on it. Damned thing is like riding a truck, but fun enough with power. No power, it's a killer. Miserable cranking away on a 60 pound bicycle with a single speed. You need monster legs to get it up any grade at all, and 2 miles without battery power feels like 20 miles. Just to prove the point, Sondors owners are constantly complaining about cranks coming loose and even stripping out the threads in the cranks at the pedal mounts. Cheap alloy cranks do not live long pedaling away on that heavy single speed bike! You have to constantly keep them torqued up since the aluminum moves from all the torque put on them. I only ride it now in the winter. I ride Haibikes and a tad pole recumbent eTrike now. For the life of me, when I roll out that Sondors, I can't imagine how I rode that damned thing 1,700 miles. Try and find a Sondors owner near you. Huge Sondors Facebook owners page, almost 8,000 members world wide. Amazing how many owners you can get when you sell the first bikes for $499 plus $200 shipping. On the used market they are way cheaper than building a bike. Easy to get a used one with a few upgrades for around $700. Even just ride one and see how brutal they are to ride without the battery.