I agree with everything BD said. Everything that has been created and everything that has happened has been under God's explicit and sovereign design. Man has no power to change God's plan. However, I'm not exactly sure how this relates to whether God demanded a price. The price that God did demand we could never meet. That only leaves one option, if some men are going to be saved, as far as I can see it.
Than you must believe that man's rebellion agianst God is not really a "rebellion," but something God determined must happen. It was then God's decision, right?
However, I'm not exactly sure how this relates to whether God demanded a price
A price for what? What did man do that God didn't want or allow him to do? Did man's rebellion change anything God did not choregraph from before all ages? Where is the crime?
This is where Protestant logic seems to break down. You speak of 'offense' and 'price' needed to 'redeem' man for something man had no power or ability to change.
It's like asking that you to pay a penalty for getting sick.
And what was God supposedly so 'angry' about? He didn't know that we would turn out to be a rotten bunch? Why was He 'offended?'