RV sales follow the economy. When money is available people spend on non essential things such as expensive RVs. Sellers market. When money is tight people don't buy and may even have to sell. Buyers market. With so may workers being idled and nest eggs being sacked, there will be many starting to need any extra money they can come by. I would say buyers market now, and even more so in the weeks to come. But at some point it will suddenly end as things begin to settle out. Timing is anyone's guess.
If you find a good deal then go for it without feeling like you are taking advantage of someone. If they need the money, then they need it now. If it is a good enough deal, someone is going to buy it for that price.