They changed over in...oh...what, 2002? They took their time "pulling" them from store shelves since I saw and still seem those DVDs and other WWF ones in music/DVD stores all the time, brand new.
I'd say it has more to do with them being quite old. *shrug*
It's strange that a lot of those crappy non-PPV releases sometimes are difficult to find.
DH: They had Hulk Still Rules? I've not seen that cheap anywhere, because that's about what I'd hope to pay for that.
X-mas time at Walgreens (when the $5.99 DVD's were 2/$5, oh yeah on Black Friday)....I've also seen Hardy Boyz: Leap of Faith, the first Rock DVD, a few PPVs and Best of Raw Vol 1. at a local Pathmark (NY/NJ/PA area supermarket) for $6.99