Welcome Scardey,
To be perfectly honest, if it is a full size bus, it is probably worth close to $1000 if it runs well enough to get to the recyclers under its own power.
Older gas buses are underpowered, shorter lived and generally get poor fuel mileage compared to recent diesels.
A gasser bus with a broken transmission is not very attractive when we see decent diesel buses with working transmissions sell for $1500-$4500 all day long.
Here is a DT466 powered, 5 speed bus that is currently at $1500 at auction.
https://www.govdeals.com/index.cfm?f...22&acctid=2192
Auctions sites:
Government Surplus Auctions - govdeals.com
www.publicsurplus.com
www.purplewave.com
422 Sales
www.rbauction.com
Take a look at the classifieds on skoolie.net as well.
Good luck on your quest.