Hi these things happen very often in local hyper/super markets in here these days. The counter price is different from the tag price or items without tags. Most of us had gone through the same issue.

I had couple of similar experience, These days you don’t find price tags on product, if you ask for assistance the rep otters a price & when you I went to pay the price is totally different. When I inquire about it, the cashier explains me saying the bar code is different & the rep made a mistake.