They're also called "churchwardens", and they are typically pretty expensive. Here are a few links I found..

http://www.blades-uk.com/view_items....id=10&start=60

http://search.ebay.com/Lotr-Pipe-Sta...fnuZ1QQxpufuZx

http://www.macqueenpipes.com/index.a...ATS&Category=6