I am looking at putting up a 50X60 insulated steel bulding. Most of the quotes I have gotten are from $25,000-$15,800. Has anyone delt with any of these companies before, because every one of them tells you a different story. The best price I got was from Olympia Steel, but they are not AISC (American Institute of Steel Constructors) certified, so does this mean I should not deal with them? I would rather pay more for a building and deal with a good company and have no problems putting the building up myself.