I have just been to PC world Manchester - Chester Road and seen this pans..
They are very good and RRP is about 2.50, is on clearance and set of 2 pen only £0.47p
Unfortunatly its not on their website but its in store.
Its clearance item so its in limited stores.. not in any of the newly refurbished stores.
Manchester - Chester road branch got still abotu 10 pack of it.