I bought one in Blacks in Swansea today for £10.50 down from £34.99!!
I asked why they were so cheap as they had a pile of them and the only reason is that they are last season's colour (hence not available from their online store).
Brilliant design - folds flat and cooling unit is removable too. 14 litre size and tall enough to take milk bottles etc. Powered by 12V car lead.