This is becoming even harder to achieve nowadays, there is all this variety in size of products and more and more over the years(at least in the midwest) it seems that grocery stores want to take the small product and apply minimums to deals.
there will be an 8oz offering and a 14 oz offering, the 8 oz will be on sale but only if you buy at least 2 or 3, its incredibly frustrating.
It has incidentally made my junk food habits better though, If i see 2 for 5$ for a package of cookies with no minimum purchase, I'll likely grab a box. As soon as they apply that minimum, i am gonna be thinking "do i really wanna eat all those cookies?" instead i end up with 0.