Yeah pretty much the entire last wave is scarce. I don't know if you frequent He-man.org or not (You see, He-Man, GI Joe and Star Wars Winx are like my major obsessions.) But The term "Spin Blade" is like a curse word there.

The Spin/Smash blade variants were still on the shelves a year after the line was canceled, that's how clogged the shelves were.