This shop sells items only available throughout the War. The whole event will have new items and prizes added all of the time, with a limited amount in stock - once sold out they *might* not be available again! Everything can only be bought with War Points gained from the war.
Editorial Time: From Harv: Will we ever be able to use our war points again?
The war shop is open whenever there is a war. Those war points have no value because you needed to spend them during the previous war event. Whenever we have a new war, these points will be reset.