Since the OP is in north Texas near Dallas - we don't see many fall deals until late October or November after the Dallas RV Show - several people will be buying new as the camping season is starting in Texas.
So the dealers will have several used Class A, Class C and 5th wheel units available. There is also a newish location for PPL in Cleburne which has several consignment units from individuals on sale/ display. Definitely worth a stop for anyone looking for a quality used rig.
Yes, we camp year round in Texas. The family crowd hits the lakes and hill country trying to escape some of the 100 degree plus heat in the summer, but October, November, December, January, Febuary, March and April are our big camping months for full-timers and older Texans. The Dallas area can be a bit cooler than we wish, but the Texas Hill Country is excellent camping during the winter, along with the piney woods of East Texas (fewer bugs in the winter than the summer).
All the COE lakes have open campgrounds all winter in Texas. Personally, I prefer to spend most of my winter south of I-10 - with great locations across 800 miles of Texas. Folks in those regions never winterize their rigs.
We see some parks more crowded on Thanksgiving and the week after Christmas than Memorial Day or 4th of July. Labor Day is almost always too hot for good camping in Texas.
If possible, we head out of state to the mountains starting in May through September.
Edit - the Dallas RV Show was last weekend
some links for the OP -
Austin RV Show - Oct 14-16 PPL Consignment Sales - has a Cleburne location I-35 RV Super Center - Denton - consignment sales
Full-Time 2014 - ????
“Not all who wander are lost.”
"You were supposed to turn back at the last street."
2012 Ram 2500 Mega Cab
2014 Flagstaff 832IKBS TT