I sold my Vision R45 for 500 and got a almost new BikeE CT for $300 and a new BikeE Ct for $450.
Both these companies are OUT OF BUSINESS.
I think the BikeE AT has a shock, this is not a value added item, because it requires maintenance and can even fail, losing air pressure and dropping you down. The shock also is heavy and slows you down.
Offer $500 for both.