The entirety of the code is not available publicly (although if you're wondering about the rating system, it's just a reconfigured version of a free rating system.)

Maybe when I get the code in a state that is more transferable than it is now, I'll make it available.

However, this doesn't keep you from answering my question (if you have an answer, that is) as none of the core order functionality was actually changed (just what was being ordered).