I have a brand new Cobra hangar dolly for sale at $990, a 10% discount from the list price on Wings and Wheels. I ordered this by mistake with my new ASH31Mi. You can see a photo of this dolly at:
https://wingsandwheels.com/hangar-dolly.html
Shipping cost by UPS Ground is between $30 and $60, depending on location (West Coast is cheapest).
Tom