I couldn't believe this, they had loads plus other fancy Sony ones for £7.50 (sorry didn't get a pic).
Colours were orange, blue, yellow and possibly other - no pink though! This was the Kingsthorpe store in Northampton but perhaps it's a country-wide clearout?
Not tried them yet as they are a Xmas prsent for one of the kids. Can't go wrong for the price though IMHO.