No, not wrong imo. I did the same with a box of wine, Monday morning it still had the weekend special low price showing, I put it thru the checkout , took it home and realised I had paid too much. took the box straight back to the supermarket, they went to the wine aslie checked the advertised price, said sorry and gave me money back. I turned to walk out and the lady said don't forget your box ( 12 bottles) of wine. Our mistake -your win.
Totally unintentional on my behalf.. obviously they has re-adjusted the till price but not the shelf price. I felt a bit guilty , for about 3 minutes.
