Yes, there are a couple of Wal-Marts in my area that had a ton of TV shows (some seasons, some whole series) in the $10-$20 dollar range The Flash was the only one however I felt I wanted to own. I'm more a collector of 70's-90's animation than anything. Sure I have a huge nostalgia for TV series of that era as well, but I have to draw a line somewhere, besides most of those can be viewed for free online in one way or another. Even The Flash (1990) is on CW seed (or it was last time I checked), but having it in DVD form was something I wanted.
There are no more good TV Shows, only ones that haven't disappointed me yet.