Just a quick search for the Bus, I found:
http://www.premair.com/html/a320.shtml (quote around $11,500)
For Boeing products Alteon seems OK.
http://www.alteontraining.com/index.shtml 737 type around $7,000
One thing to watch out for with airlines that offer type training is that many only offer facilities leases. In other words they contract to a flight school to provide training, thus middle man that adds cost to your training.
Just like anything, shop around. If you have experience on the jet, getting the type should be a no-brainer so I'd shop by price. If on the other hand you had zero jet experience, you may want to shop by course content.
I'll keep looking for info on the BUS, and if anyone has good gouge for [type] contract training, please post it here. This would make a good resource section on the web site.
Thanks
PS Welcome to the forums