Here's something from the page on Amazon, that's easy to miss:
Shipping: Due to this item's unusual size or weight, it requires special handling and will ship separately from other items in your order. We regret that it is not available to ship to APO/FPO, P.O. Boxes, U.S. Territories, Hawaii, or Alaska. The total shipping charge for this item is $75.00.
Seems it's "free" shipping, with an "extra" shipping charge of $75!!
I think I'd check with my local Toys-R-Us, and see what their B&M price is....then spend a couple bucks to drive down and get it there, if comparable.
Just my 2-cents.