These Super17 bikes are getting super popular and I've been invited to go check the new ones out in LA on the 25th! I recently got myself a OneWheel and have been riding that thing up and down the beaches here in SoCal quite a bit. I see these e-bikes all the time so it's a huge segment. It's also a great thing to have as a pit bike or one you (or your partner/kids) piddle around on near camp. Range is 35-40 miles (my OneWheel is about 18 miles).
Models go from about $1400 to $2200. Given my OneWheel XR was $1800 and many mountain bikes can easily run you $5k that seems very reasonable.