This will most probably be the most vague post because I don't have that much info on it but basically my mum wanted to buy my little sister this necklace from BHS. Its a necklace which has a small guitar as a pendant and a clock in the middle. It was priced at £12 but when she got to the till it was 50p! She went back today and they still have lots of them. They are all still marked at £12 but when you get to the till they still go through at 50p. This was in Trafford Centre, don't know if its nationwide and if its a mistake by them or not.
Sorry I don't have pics or proof but I thought I'd let everyone know as they are really nice gifts for such a cheap price. I can't find the necklace online but I will try and get a picture up soon.