Contract pricing (Kebir Blue)

Is there any way to adjust contract pricing? I want to create a contract from a corporation to my country, but it will only allow me to price it at the market price. I want to be able to contract the price where the corporation can still make a small profit. Are contract prices non negotiable?

Afraid you are stuck with that. Thats the disadvantage of self supply, common markets et al., the advantage being extra points on your score if you're going for awards.
You could raise the output quality of the corp to where it just makes a profit, but your country will pay the extra cost, meh, you have to juggle it. A couple of really good econ players I knew some years ago had this well figured out and had very healthy enterprises and countries with hundreds of contracts. Personally I find it too much micro-managing, but of course thats down to your game play, no pain - no gain, lol.

Thanks for the help.