So lets look at your math and what you just said They sold a 6 gram and a 10 gram bar for a total of $508. So they sold .514 ounces of raw gold (16/31.1) for $508 which would be $988 dollars an ounce. So I guess I still don't see your point.
Also, you are equating selling 16 grams (or .514 ounces) for $508 to selling 748 ounces to a refinery for $1.1 million?