I tried the animal kingdom today and they had one tiny cat carrier - did not ask price. He did say he was due a shipment of things in including covered litter trays and beds.

Try The rider, it is on the opposite side of the street from Toys R us / Applebys. I bought mine there. I think QR275 and I am told that it is approved by international airlines.

They are also expecting a shipment of stuff and they make scratching posts (no more until after Asian games)