I know you can pick up old fire trucks in sydney for 3 - 5k dollars. They're all working units with functional pumps (usually godiva) and are usually turfed by the nswfb when they become too expensive to maintain. I've been tempted a couple of times to get one just for the pump as I live in a bushy area & it'd beat the hell out of a little davey pump come bushfire season. Plus the old internationals have a thumping 8 cylinder engine in them that just don't die. About three months ago I did a three day driving course on a skidpan & closed track in a 30 year old international pump & had an absolute ball. Amazing fun! You really can't kill the things & theres still probably three dozen or so in service in the state as spares. The new models are lucky to last 15 years - don't make them like they used to.
For the seriously fire engine addicts here's a link to one of the larger working collections in the world.
http://www.museumoffire.com.au/index.cfm?fuseaction=category.display&category_ID=43&CFID=62442&CFTOKEN=69247825