Most of the RV insurance companies have bonded haulers that may subcontract to haul it, your seller may deliever as part of the deal, you could rent a larger U haul and haul it yourself, or contact a Hot Shot broker.
In any case you had better consider the cost of transportation before saying yes to any deal if you can't move it yourself.
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles