Two Roy Cox Thimble Drome Tether Cars with engines

I have two Roy Cox Thimble Drome Tether cars for sale.  I will post a picture of both.  I have more pictures that I can share via private message.  I am asking $300 each or best offer.  Shipping will be $20.  I accept paypal and venmo.  I will also trade info via private message if needed.  If you have any questions please feel free to reach out!  I am happy to share information about the cars or take any requested pictures that I do not have. If you feel the price is too high please make me an offer.  I am merely going off ebay prices that have sold recently.