One million dollars! All kidding aside, a non broken original console in a daily driver condition can easily go for $1200 and higher. IMO best way to go is to buy the top pieces and then buy a repro base from The Parts Place.
I was able to buy a used console on ebay and had to repair it. The base of an original can be very brittle and they crack easily. I like the idea of using a repo base with original faceplate. These faceplates and console covers are not easy to find or cheap but they do appear on ebay from time to time.