I have sold 2 toy haulers and one class A, both toy haulers were much easier. The first one took about 3 weeks, ended up a couple came from Utah...with cash. We had gone over all the questions, I sent extra pics and agreed on a price ahead of time. I only showed it to a few people. The second one, strangely enough was from Oregon, kind of the same thing but that took several price drops and several months.
Now the class A took over a year. One deal fell through because the geriatric buyer's girl friend broke up with him and she was going to be the driver. I had just brought it to a dealer for an inspection (they were going to pay for it). Several people looked, many dealers calling and low balling, finally sold it to someone kind of local. Had many calls from him afterward as he was trying to figure stuff out.
It is not as fun to sell as it is to buy.