What is the price of a Thompson contender pistol?

Today I purchased a used one with a 22cal target bbl. for $350. It has a rubber grip (Hoag) which I need to replace with walnut and the front stock screw needs to be changed out. Walnut stock from Numerich is $36.50. hHis pistol should be ready to go for about $400 used. Extra bbls are about $265 to $350 but I see them for $199 in pawn shops and some gun shops- Good hunting. ROSS