Just been to local tesco clothing store and stumbled across a bargain:-
Cherokee boys 'jungle' briefs (5 pack) reduced from £2.50 to £0.75 then 3 for 2, so works out £1.50 for 15 pairs!!!! 10p each
Still shows as £2.50 on label but when you get to the till, they are reduced to £0.75! No mention of a 3 for 2 deal anywhere, but if you buy 3, you only pay for 2 packs and shop assistant confirmed they are on 3 for 2 deal.
Come in sizes 18-24, 2-3, 3-4 and 4-5 from what i can see.