Twinings Herbal teabags 50p per box of 20 (online + instore) @ Asda

Ok, so this won't reach burning degrees of heat BUT they are less than half price and will benefit some people.
tVarious boxes of 20 herbal teabags Are normally around £1.20 so if you like them it's worth stocking up. And if you don't know whether you like them you can give them a try at this price! I especially like the Peppermint ones, Lemon + Ginger and also Camomile + Honey ones.