We went to the big Comercial Mexicana (the one next to Costco) to load up for the impending family arrival. My wife bought 2 personal care items that were marked at 27 pesos each. That evening she was looking at Soriana's website and noticed the same item on sale. Out of curiosity she rooted around and found the register receipt from Comercial where she discovered that we had been charged 97 pesos each. We drove down there yesterday and checked. There were the same items on the shelf, still marked at 27 pesos and still being scanned at 97 pesos. Getting the refund was no problem, but it turned out that it was almost impossible to purchase the item at the intended cost. There appeared to be no person in the store with the authority to override the scanner's programming. I offered to just leave 54 pesos and walk out but that was not to be. We couldn't leave with the items unless they were "registered". We were escalated from the Servicio de Cliente desk to the floor assistant to the assistant manager to the grand gerente and chief poobah. Only after several phone calls to obtain the secret code and mystery handshake was the gerente actually able to punch in an alternate (correct) price. If time were really money, we should have just stayed home, but in the end it was fun watching the whole show. The moral of the story is it doesn't matter how long the register receipt is, you have to check. From the reduction of the shelf stock I know that they moved lots of these items at 97 pesos and probably will continue to do so until someone can correct the database. Just because they're out to get me, it doesn't mean I'm paranoid .