I dont know whoever told you a 209 was a stretched 207. That's absolute rubbish. The 208 is the caravan which is a turbine. The design was to provide a training a.c suitable for transformation from piston to jet, without the need to fly a turbo prop.
They are specifically used in training Indian pilots stepping into jets. You wont find one for private hire in Australia. Australian operators like Jetstar dont require jet time to fly an A320, like other countries
All these previous people are talking crap. I doubt they have ever seen a 209 in real life.
If you need to be prepared for flying there is a manual for sale on ebay
Cessna Model 209 JET SKYWAGON Owner's Manual | eBay
