I bought a dolly 20+ years ago and can tow all front wheel drive cars and some rear/4 wheel drives. Whole lot cheaper and 100% more flexible. I can hook up a vehicle on the dolly in 10 min and I am 80 years old. But I have seen toads for sale here on Craigs list several times. NC is a little far for you I guess.
IAMICHABOD wrote: Escapees RV Club has a For Sale section that list some RV Network
To answer the OP's *question*.....
As above try the various RV forums (like SKPs) that allow "for sale".
Only other alternative is to search CraigsList, AutoTrader, Ebay, etc.
You might try a "wanted" post on the above. Suggest you get a phone service for incoming calls only (about $8. per month). Saves a lot of calls at 2AM, 6AM, 11Pm, & obvious "junk" calls.
Most allow a pretty lengthy "outgoing" message - to describe exactly what you are looking for.