You can use this calculator to work out how much purchasing Disneyland Passes for your family would cost using the different payment options and discounts. 

At this time you can only choose one type of discount to apply to all passes in the calculator so you may need to do more than one calculation if for example you need two passes with a disability discount and one with no discount. Although not stated anywhere it also seems that Disneyland Paris do not apply the disability discount to childs passes so please bear this in mind as the calculator will show a discount if you select a child pass, you would need to select adult passes if adding a disability discount,

This calculator is not produced by Disney and is intended to be a guide only, prices may also be slightly rounded. For confirmed prices always refer to the Disneyland Paris site or to cast members and your contract when purchasing.