What does dollar per fine ounce mean?

Answer 1

it is the market-cost of gold and, as far as i know, it means the cost of gold when it makes up 99.5% of a troy ounce. gold generally occurs, after refinement, at a purity of 99.5% within every (troy) ounce of "gold", i.e. 0.5% of the troy ounce constitutes impurities.