Cost of Average sedan for 2 days - Shanghai to various places in the Jiangsu province & Back

To be honest, it may be hard for you to find a car with an English speaking driver.
If you want to do that, you may need to join a tour, especially a group tour, so that you can get a good car, a driver and a English speaking tour guide.
The fee is different for different tour agency and it is suggested to consult with the tour agency directly. But in general, the fee is not cheap.
In my opinion, it is suggested to travel on your own and the transportation in those cities are very convenient and are easy to take.