Since it is manufactured by ASUS, and that is where you would register it, check their web site. Of course they are not going to cover damage under warranty. I know that some of the extended warranty companies cover damage or loss, but it's a little late for that. Here is what I got off of the Asus site. I don't know if this is the number you called, but if not it's worth a shot. They must sell parts, either that or out of warranty repair.
?RETAIL Product Support ONLY: 1-877-339-2787
(Best Buy USA, OfficeMax, Staples USA, Costco Wholesale, Microsoft, Office Depot, Walmart, Future Shop )
All-in-One, Desktop, Netbook,
Notebook or Tablet
From the tear down, it sounds like it's gonna be expensive. I'm surprised that the Gorilla Glass (a Corning product) didn't hold up.