If you're looking for an Express AWD van, visit sites like
www.truckpaper.com and www.commercialtrucktrader.com
I found several for sale on each site this morning.
Most of the ads I saw had prices around $15K.
Here's the cheapest I found:
2005 Chevrolet Express 1500 AWD
158K miles, $9000
5.3L V8, auto trans
panel van, swing out side doors