I had a £68k-in-a-dealers-forecourt motorhome with faults that the manufacturer should have never built in the first place (all of that model suffers), should have recalled them all for repairs but they charged me £1300 and went to some pains to point out what a favour they were doing for me. They did the job, I drove it home and the next day I found that it had the same fault I had taken it to the manufacturer to fix. (The side walls had cracks in them). There was no point going back to the manufacturer, obviously the model has in-built un-fixable design faults.
So obviously I wanted rid of it ASAP but I didn't want to make any false claims to the buyer. I got Motorhome Depot to sell it, and I never met the buyer, I didn't make any false claims nor was I guilty of withholding any information.
I had been offered £47k by a couple of dealers and when Motorhome Depot sold it I got £50k. Suppose Motorhome Depot got £55k from the buyer. The buyer saved over £10k from what he would have paid at a dealer and I got £3k more than I would have got from a dealer, and more importantly I got rid of a heap of carp and I will never ever buy another new model from that company.
Anyway to answer the OP's question, I would recommend Motorhome Depot as a good balance between the rubbish price the dealer will give you, and the peace of mind that you get from not being responsible for any defects that it might have, or indeed that the buyer might think it has.
I know for a fact from my experience that there is a £15k gap between what a dealer will sell for and what they will give you for the exact same make, model and year motorhome.