To illustrate the OP's point, December 14-24 2007, Lagoon View Concierge at the Beach Club would be $5794 (room only) December 14-24 2008, same room, would be $7133! That's a pretty substantial increase due to the change in billing. Now, I realize that pretty much all hotels bill this way. If you travel during a premium time, you pay a premium price no matter when you check in, but it is a shock for the price to go up that much in one year!