I've seen the show stable for sale here a few times, but never PE. Maybe buying one building at a time would be cheaper?
If I ever get a pony room (to store playsets in) I'm definitely going to do a fair or con run to the US or UK to get some of the playsets in person, and pack them in my suitcase. The last show stable that popped up in Brissie was so expensive I could've imported one for less!