Usually £8.99 per month if you go the Blizzard way. So this is effectively £7.30 ish per month, so thats a saving of £1.70 per month, which beleive me, makes a difference when you add it up.
Best price by far if your in need of more play time or dont have the will to subscribe using the 6 month option like me :) Even though deep down, it'd be worth it.
Don't start a QQ flame war about the pricing of a game, and please dont vote cold based on the game and subscription, vote based on the DEAL!
3.2% Quidco available to give you 48 shiny pennies.