I understand exactly what you saying, I recently dropped off my L28 block, head, and crank and went over what I wanted. They showed me EVERYTHING in the shop, and went into detail what each process includes and was quoted a price, I recently talked to them, and they said I need a new intake valve and the rest were up to par, and told me it was probably a good idea to get the angle job. I said go ahead, didn't even ask a price, I really don't care what it costs, its about quality-not the quantity.
I'd rather it cost X amount more the first time, then to have to re-do it and pay X times 5.