I have added crown molding to my entire condo and it only cost me about $1200. That also included casing for 4 large windows.
I used this guy:
He did a fantastic job. He works with his brother, is on time and did the whole place in 2 days.
He still has a 6″ crown molding special for $4 per foot (painted and installed). He doesn’t charge extra for corners.
I can send you some pictures of my place if you wish.
