I'm guessing buy the time you purchased all the parts, had them presure checked etc.. Then do all the machine work which I bet will be substantial on pro comps you would be ahead of the game getting eddies or RHS x or whatever
They all have to be pulled apart,inspected,& done correctly. My low dollar setup,(E.Q heads,stock valves) came within 200 bones of OU812's price. An eye opener,to me.