It's not a widespread clearance, so who knows.
My store still has quite a few on hand, though they are not the newer sets. But if you don't have them, $5.97 and $4.97 are great prices. Considering they still advertise the Spellbinders die cut machine and dies, I think it was just particular stores getting rid of current stock to make room for the Christmas stuff. I just went and bought another set yesterday, I'm shameless!
Have fun and be creative!