That's actually been the case in a lot of stores so I've read. But, what I've heard/seen is confirmed a few times over, and Sunday's sale looks to be the time to buy. That link above specifies which sets, including Married With Children, Seinfeld, Good Times, The Outer Limits, etc.
Naturally, no CSI or 24, although all I need is 24 Season 4. Wal Mart has tons of TV on DVD for $19.99 (or whatever wacky price, $19.72) anyway.