This website may be for you (and I am definitely salivating over what is offered). Looks like howitzers start at about $4,500 and go up from there (without carriage). Howitzers are back on the menu!

http://steencannons.com/cannons/

Edit to add: they even have powder-to-range charts available for download, and instructions on firing and cleaning artillery! This site is amazing! One more reason for me to get out of the suburbs and move out to the farm!

This website may be for you (and I am definitely salivating over what is offered). Looks like howitzers start at about $4,500 and go up from there (without carriage). Howitzers are back on the menu!

http://steencannons.com/cannons/