Think of it this way: You’re a band and a club owner wants to hire you to perform. He offers you $50 per song. You and your 4 other bandmembers rehearse, drive there, set up, tune up. Then the owner then says, “OK, just play one song.” That wouldn’t be worth it, would it? It’s the same with manufacturing – they simply can’t make any money on quantities less than 1000 because the same amount of setup goes into a run of 500 as it does for a run of a million.