I agonized a while about a dolly for my Palomino and finally arrived at a reasonable cost solution, a used single axle boat trailer. Everything is already there, tongue and all plus I hook it to my quad and back it and the camper in the garage. It takes 2 (my wife guiding me) and me on the quad, but unlike a dolly with casters, I can move mine about on gravel or even park it on the lawn with no issue and a boat trailer has various tie-down points to secure a camper to.
Bought a used Tee-Nee single axle boat trailer on Craig's List for 200 bucks, plus, I can use the trailer (with a plywood deck for hauling my quads behind the truck and camper. All good.
The Reico dolly is only good on hard concrete or asphalt. I have a gravel drive and apron so that don't work.