Dynamax Isata F-series

I realize they don't make it anymore, it seems to have been superseded by the Isata 5 and others but I am interested in the older Isata IF-255, it's a class C with a F550 front and no slides. It's the cheapest luxury they made, hopefully their price will reflect that.

Rvtrader has nothing.. how does one find this specific model? Interested in one about 7-10 years old.