It's very possible that when you stepped into the store, they were still in the process of adjusting the signing for the items. Did you know that with a store the size of most of our stores, it takes several hours to change over all the signing? And all of our available floor associates are out there flipping signs, so as to get it taken care of as soon as possible. We try to stay out of your way, and we do as much of it while we're closed as possible, but sometimes ads set during the middle of the day.
Also, when we're setting signs, there are times when customers are where we need to be. Sometimes we forget to come back to a particular area. It isn't as though we're trying to rip you off.
As a cashier, I see this happen a lot, and it always frustrates me, because it isn't my fault, and everyone assumes that I should know all of the prices, and that I should just automatically adjust the prices for them. If your discrepency is above a certain amount, I have to call and check with that department. A lot of times, the person working that department is busy helping someone else...I try my best to keep my eye on what I'm ringing up, but I don't know what is supposed to ring up what. That's every bit as much your responsibility to point out as it is mine to fix it for you.
All I can suggest to you is that you take a moment before you slide your card or write your check or whatever it is you intend to do. Slow down, and look over that screen at the end of the bay. Look at the prices. And then ask me if you have any questions. Politely, if you please?