Let me start out by saying I use to do Kmart doubles ALL THE TIME! You can get TONS of stuff FREE!!
It use to be unlimited doubles, then 10, now it's 5. But that means 5 free things!
You do have to spend 25 dollars. But they double coupons up to 2 dollars! If you have any questions just let me know. I am going to look through my coupons and see what is free!