I agree with Jeff. You may want to try Craigslist. Be patient and once you see something interesting act fast. I picked up two original Oklahoma Joe's and two original New Braunfels smokers for a fraction of their original cost. They required some cleaning but the restoration process was fun.
OK Joe's Longhorn & Vertical Roasting Oven, Brinkmann Cimmaron,'69,'73,'84,'89 Weber Kettle