Paul,
When asking for your board quotes, ask if there is a setup fee rolled into the price and see if that setup fee will be waived the second time you order. I am 99% sure that is how
PCBCART, Prototype to Production PCB supplier from China does it (that's the chinese company I mentioned a few hundred posts ago).
Also, ensure that they do electrical testing of the boards (they just make sure all the connections are made and none are shorted).
I am pretty sure you'll get a better price from
PCBCART, Prototype to Production PCB supplier from China as well. Very reasonable turn-around times, too.