Custom Sign Production and Manufacturing

I have a design for a sign project/product that I'm hoping to find a supplier for - needing to have it manufactured for my small business. This product is patent pending, and is subject to a non-disclosure agreement. Looking for the best supplier at the best price. Prefer US manufacturing, but willing to work with overseas supplier(s) if price is good enough. Drawings supplied upon request. Price posted is a range, each piece produced needs to be <$10-$15 ea at our costs.