Was in Supermarket going through self checkout and you have to get store staff to punch through discount. They have reduced something priced £50 by 75% along with the fruit and veg.
There have been a few times they’ve failed to reduce stuff so you pay full whack for going off that day produce. Also double scanned stuff that you realise later. I once paid double for laundry pods about £8 and was really annoyed as I was home before I realised and felt I couldn’t insist on a refund later in the week.
Anyway IABU go back and pay up
YANBU keep the money, life is balancing itself out.