I am an expert at drools. I have been working with it for over 2 years. I can do the whole setup and get it running in an hour. Let me know, what you want and I can do everything on it. I can also show you how to run Guvnor on tomcat, through which you can use the web guided editor, which makes life easy for a business user.
Drools is the best rules engine available in the market and is widely used, so you can easily get developers if you want.
I can also write the java code to integrate with guvnor and show you how powerful the rule engine really is !
Just, one more thing, to add. I need to make you understand how the business rules can be written on it. So, lets have a skype call ! If you feel the bid is a little high, we can discuss on the call.
Thanks & Regards,
Abhinay