The cheapest time to go shopping is during the when shops, especially the big , like Marks and Spencer, cut their prices. Everything is , sometimes by as much as 50%, and you can find some great . When you buy something, you should always make sure the who serves you gives you a in case there is a problem with the goods you have bought. In Britain, you have to pay (a government tax) on most things you buy. Lots of shops have a whose job is to try to catch (people who steal from shops).