I have been shopping for a used RV and stopped in this dealer over the weekend. Everyone was nice....of course....they gave me a totally rehearsed sales pitch (which I would not have recognized if my father had not been a salesman all his life).
When they just kept going with THEIR pitch and brought me the sales manager who negotiated the great deal no other dealer can beat (every dealer claims this), for a new unit of course, and continued to ignore everything I said, it became clear I was not dealing with people, but sharks.
The request for a $100 credit deposit was like the icing on the cake. If their pitch had worked this was the end. If it is fully refundable why ask for it at all?
Personally, I would not buy from them because if a salesperson is trained to ignore what is best for the customer there is a clear problem with the philosophy of that dealer.
At least the other dealers I stopped at were straight with me rather than showing me a taped up damaged unit that was used, then playing a switch game to convince me no good preowned travel trailers exist.