In December with a 2014 14 day Ultimate they gave me $365 credit towards my DD AP renewal. This was child ticket so you should get more for an adult ticket.
I didn't shop around this time for various reasons so you might have been able to get a bit more. The problem is there is seems to be no way to guarantee getting a better rate for the Ultimate tickets and very much down to the CM on the day.
BTW ticket prices are going up today so we should see later what the new AP prices are.