Upvote:4
would have to agree with the above answer. Gumtree is a good place to start your search for a camper or travel van purchase in that price range. Listings from private and commercial sales yards.
They have created a very thorough guide to campervan purchases as well, to avoid a dud; http://blog.gumtree.com.au/backpacker-guide-buying-van-aussie-road-trip/
Also a good place to resell after your trip. Not sure about depreciation. Depends on the model you purchase and condition / kms on the clock.
Upvote:5
Gumtree's where it's at for both travellers and locals in Australia, it's the local version of Craigslist and Ebay rolled into one.
As for what the "right" price, you're buying a used car here, with all the caution that warrants. But a few pointers: