I had a good experience using them and it seems to depend very much on the local agent. As a lone female I didn’t want to deal with the sort of intimidation that has been used as a tactic when I have sold cars privately. Yes they put an amount on top of the price but I stated what I wanted for it and it sold within the time span I needed. The money was transferred to their holding account and then to me so no fears of a money scam.
I sold the Motorhome with any jobs I was aware of having been done by the local garage so it was sold in complete faith that I knew of nothing wrong with it, if anything subsequently happened then they would be dealing with MotorHome Depot and not me so that was peace of mind.
I guess it probably depends upon your personal circumstance And the local agent.