Rack room rafe, through the roof! With a good AP code much more do-able.
300 -370 for concierge? May be even lower if that is the value season. Other posters here are better at quoting "historical rate trend analysis". And if that is too far out of the ballpark, way less for non concierge.
Remember the parks close earlly that time of year so you will get more time to enjoy your resort. The AKL is beautiful beyond words and very welcoming. Our kids LOVED it. So much to do there, you almost need a day or two to skip the parks and just enjoy the resort. (Travel Channel's #1 North American Family Resort!)
You might at first gasp at a price that high but consider all the perks of staying CL with a party of 5. It may actually cost you less than staying "room only". We find that it is pretty cost effective for us. Crunch some numbers! Room, snacks, drinks, fridge in room, COFFEE, wine, appetizers, desserts. Exclusive access to the sunrise safari (or sunSET for adults). PS's for meals all taken care of for you.....
Not to mention it is a wonderful way to spend a vacation, feeling pampered!