It's actually extremely rare to find pop tarts in English supermarkets, Ive been on a hunt myself recently. Asda have good prices, but are only selling the boring strawberry and choco poptarts (no icing on the top!! yeuch!) This is the only supermarket ive been able to find them in. most websites are charging extortionate rates per box (�3.50-�4) with complete rip-off delivery charges of like �7! But they have got hundreds of flavours to choose from i suppose.
Lucky Charms aren't much better on price either, you can buy a box on one american website for �6.99! for a box of cereal!!! I think i'm gunna have to wait for christmas lol!