I recently had a chance to write a detailed article about the workflow of my colleague Robbie Carman. Rob is a professional colorist (who works on films and television shows). 
Our recent guest Robbie Carman of Amigo Media shared a lot of insight into the world of professional film and video. He also wanted to give you an idea of what his work environment looks like.“Well I like gear! In reality my gear is separated into several categories,” said Carman. “A decade ago, the color correction systems that were in use were between half a million to a million dollars.”
Fortunately the prices have fallen significantly. There's still a lot of gear, but things have gotten a lot more affordable.