There are 5 stamps that are reduced, but there only 10 sets of each image:
Check out your sale options here: http://www.tiddlyinks.com/clear-stamps/
You will see that the images on sale are already marked down to the sale price of $6.50 for a 3x4 set and $10.00 for a 4x6 set.Remember there are only 10 sets for each image...when they sell out at this price, they will be gone until they are restocked for full price in the new year.
And just to seal the deal, I will throw in free shipping for all clear stamp orders over $30.00. No code needed, just spend $30 on clear stamps and the free shipping should apply during checkout.