It depends. Are you planning to purchase from a private seller? From a dealer? Is the table reconditioned, or all original? Do you want an installed price, with fresh cloth? If so, what make/model cloth? Do you expect it to have new cushions? If so, which ones?
We sell fully refurbished Gold Crown I's for $5-6K. This includes a full strip and paint, with any blemishes corrected. It also includes powdercoating all of the aluminum components, as well as fresh cloth and cushions (including sub-rail modifications to accommodate modern day K55 cushions, and tightened pocket openings). Gold Crown III's are a lesser table than a I, so I would suggest that the refurbished price should be slightly lower.