Costs to build an engine??

Machine shop just called and my 500ci motor is ready to pickup:toothy7:. But once he told me my bill I felt sick to my stomach:puker:. What's the typical costs to have a complete engine built if you supply all parts?? For the amount I owe I am close to being able to buy a motor complete including parts!!! He has done engines for me in the past and I thought he was reasonably priced. But this one seems way out of wack and if he won't do anything about the price its going to be sitting there for a long time before I can pick up:crybaby:

Thanks