Last week I went to the grocery store and saw and item for pretty cheap so I was like "woohoo!" and put it in my cart. I get to the self checkout and that's not the price : (

So I say hey on the shelf this item was X dollars not this Y price. They send someone to check. I point out the cheap price. The employee removes the shelf price and I get my item voided and an open charge for the sale price. ^_^

Speak up, it matters.