Ah ha!!! Was just searching using "Disney World" and no luck...with your help it popped right up there!!!
So...let me run this scenario by you all...a 10 day hopper pass through DW is $707.28 after taxes. Sams is $662.02 after taxes. Savings of about $45. If I buy from Sams all I would need to convert to an AP is go to Guest Relations and turn the ticket in and pay the difference of the Disney price of the 10 day hopper and the cost of the AP?