Anton- the 1150 I referred to was in one of your messages on the public forum. I wasn't sure if it was per oz of gold or oz of dore (which whould have meant the dore was more like 80% gold- improbable, but not impossible if they only separated out native metal). That's why my post was in the form of a question as to whether it was per oz of dore- no intention to misinterpret or spread false info.
So getting 1150 /oz when gold is 1350 means 200 for smelting and refining. Refining should be 5%, or ~$70, so that means smelting costs $130, or about 10%.