I saw these Liquorice Allsorts posted earlier today for 50p per box. So I went into Tesco's Dundee, went through self serve till with one box and it scanned for a penny. I went back and cleared their shelves of them and then went to another two Tesco's in Dundee and did th same. I think this must be nationwide and I think it'll just be for today as there is no price on the shelve edge. I think they're clearing Christmas stock but they are dated till Sept' 2010.
I know I'm a gadgie but hey, it's all worth about £80 for 20p purchase, lol.