Previous posters are right Tezzer. The PE fare of £1,156 each way is in W class and there are no fares available in the normally lower E and T fare classes. The lower Club World each way fare is in I class which comes with restrictions. The comparable Club fare (to W class in PE) is considerably higher.

Bottom line is that if you know you won't have to change your plans then the business class fare is a great deal. If you have to change it could prove a little more expensive.

Have a great trip.