Mega Used-MH Dealers or Lots (besides PPL)??

Hello! First time poster, long time reader. We're looking at used class A's and haven't narrowed down our preferences, other than shorter length and a general price point.

We've heard of PPL in Texas, but are wondering: Are there any other dealers or lots in the US offering so many used RVs (for sale or on consignment) in one spot?

Any comments on navigating PPL and the used market are welcome, too. Thanks much.