Jetson makes those extra small ebikes (Bolt series is one) that you buy at Target and some Wal Marts. Jetson is expanding in the market and getting into other size/style of ebikes and I hear electric kick scooters. I see a few of the tiny wheel Jetsons running running around and talking to the owners they are okay for what you pay. Obviously not stellar quality but not total turds either.
I recently was given a set of wheels from a cheap no-name ebike with good tires. Nice condition 20" x 4" fat tire Kenda brand. OMG, getting those tires off the rim made motorcycle tires look easy! I was saving the tires for a friend who helps lower income people keep cheaper ebikes on the road, and tires are always a higher expense. I gave up and just dumped the whole wheels off on him.
I looked the Warren up. It was more money than a Lectric XP and has lower battery capacity but not completely horrible specs.