I wondered if that was the case, Bob, but I haven't been in for a few weeks. I am planning to visit again in the next few days and was intending to report back. I would guess that they are not the usual brands? Carrefour used to have them in this time of year but don't exist now. I'll check out AB as well.
I think it is Amazon being silly. They aren't always cheap. Here are some Tesco examples. I just used the Amazon version to illustrate what they are. If you want a real laugh look at their Cadbury selection.