NIS 2012 --- 3 licenses....UK

Hi everyone

 

Not sure if this is in the right place

 

I have NIS 2012,3 licenses im about 6 months through the current subscription,does anyone know how much it cost to buy a extra license/key for a 4th computer ?

 

I log into my Norton account and seam to be going around in circles looking for the correct price ?

 

Thank you in advance

 

Martin in UK