I should think it would be an expensive disposable house. I would just put a cardboard box in if you don't want to put a pigloo in. The correx will probable last a day! or it would with my guinea and I would rather him chew cardboard than plastic.
Estate agents advertising boards are made out of correplast, they advertise local events, just go into your local estate agents and ask if you can have some old boards ! You`ll have endless surply of them to make as many play houses as you like ! :