Hello EEVBLOG PEOPLE, and Mr. Crazy Aussie!

I'm brand spanking new to this forums, but I have watched probably over 100 episodes of Dave's EEVBLOG on youtube!
I love how the world can now be driven by the crowd with websites like kickstarter! Dave have obviously taken great advantage of this great company with his great device! Which is GREAT!
I am a college student (working on my BSEE followed by MSEE) Here in San Jose, California, and I think I have run into an issue that I have run into several times now, but I can't find a device anywhere that has a cure to my problem!! (I don't plan on spilling the problem until later because I would like to keep my idea confidential). I have thoughts of how it can be cured, and I'm planning to prototype this device by ordering the appropriate parts from digikey. I plan to make the PCB using my CNC Mill which basically drills away the unwanted copper from a copper clad board. Obviously this method would horribly fail if I have to make more than 3 boards (for example for a kickstarter)
I have never had a board made commercially, (except assisted in negotiating to have one made for the company I work for, which cost ~$25K).
I think my device would be extremely helpful to students like me, and prototypers everywhere!
Here are the few questions among the hundreds that are running through my head right now:
1) To those who have had commercial boards made: about how much was the total cost/board?
2) How easy is it to sell your idea on kickstarter? Do you have to sell anything, or can it be pure research?
3) Dave, or anyone administrating this forum: do you guys allow kickstarter campaign advertising here?
4) Being a busy college student, are there professionals that could work with me developing my idea, while keeping it confidential?
5) When do I patent, if ever? (Any advantages with staying open-source?)
Again HELLOOOO EEVBLOG FORUM!
And thank you everyone for your input!
-Gytis B.