16.-20 inches is a very large chuck as to 4 foot drawtube is large too. A crappy clausing lathe beat used is still a grand or more for some reason. The Chinese look supermaxs ( Bridgeport look alike) is 2500 . Prices on old equipment is high for whatever reason.
If u need something machined or welded or just 350.00 in material I could do that too.