TLDR (to *hopefully* reduce the number of thumbs down) - The clearance price listed is for INSTORE only, website shows full price, even for my store which (still) has them in stock!!!
I went to my local Kmart to see if they had any of the clearance items (or more) listed in this post
While there, I found some other items on clearance that were not in that list. One that seemed like a good deal was the Imaginext Serpent Strike Pyramid Playset
marked down to $14. My store had several in stock.
To make this even slicker, I had found a 6v Cars toy on sale for $23 ( I would post a link but cannot seem to find it on KMART.com), and was ringing that up separately, while waiting on my wife to let me know if I should get the playset. When that rang up, it printed off a coupon for $5 off anything in the store (with normal exclusions). I was able to apply that coupon to my playset which brought the price down to $9 and change.
So you might try to buy something else first, and see if the coupon prints. I am not sure why it printed, and I did not get a good look at it before I gave it to the salesperson.
Anyways, even without the coupon this seemed like a good deal, IF you have a Kmart left in your area. The price online does not reflect the in-store price, so it might be worth it to check it out!