Here's another post about the higher cost of short bus's. viewtopic.php?f=6&t=2610
Good running bus's for $2,000 are few and far between, and for some reason the shorter ones cost more. I fear that it will be much harder (maybe near impossible) to find what you're looking for. I'm not trying to be negative by any means, just what I've seen bus's priced at. If I do happen across a short bus in that price range I'd let you know.