Gold exists at .004 parts per million. Silver at .07 parts per million. This is a 17.5 to 1 ratio. It costs $400 to mine/process every oz of gold. For silver it costs about between $3-4.50 per oz. Hmmm....$4.50 x 17.5 = $78.85 and $400/17.5 = $22.85 So why doesnt it cost $78.85 per oz to mine/process gold OR why doesnt it cost $22.85 to mine/process silver? Is there really that much difference in smashing up rocks, dropping in some chemicals, and then processing it out into bars? I can see there being some slight differences, but costing over $300 more per oz to process gold in the same ratio of silver being 17.5 to 1? Can anyone shed any light on this?