If you need a large passenger bus to fit your Duggar lifestyle (or if you are starting a band, church, cult, etc), you might be tempted to pickup something used from the private shuttle bus market, used school bus, or ex-public transport, but you'd be wrong. The thing you actually need is a used prison transporter like this 2007 International 4400 offered here on eBay
for $18,900 buy-it-now located in Hollywood, FL with 18 days to go.