Yes it could be dodgy buying privately but I suspect at the price being looked at the dealers would be quite a bit dearer and not necessarily be very reliable on aftersales (for motorhomes its the lower end of the market). I have always thought you are buying the seller not the car/motorhome and walk away if you aren't happy. I would be a lot happier buying privately at that end of the market you can speak to the previous owner get some idea of what sort of person they are ask about any history/servicing/accidents /problems etc. Given the age of many motorhome owners there will always be a few reluctant sellers of good well looked after motorhomes due to health/age/lack of use/running costs that could be very good buys.As you are in the market to buying without a trade-in you are in a good position to get a good price if you were looking to buy new or used from a dealer(knock them down). If you are looking around to buy privatly be very careful out there. There are various scams on the auction sites and a few Funsters on here seem to find the scams and have fun with them until they are taken down by the sites. Also a recent post about a HPI check on here where a fellow Funsters ended up buying a previously written off vehicle which thus devalued his unit. a bit of Commen sence and please come back here for any advice, there are some guys on here who seem to know about everything.
Good luck and when you get one you will just love the life