Not sure Gold will go away as a monetary value. I think it will be used for a lot of various high tech components and shielding for various space craft. There is a value for it as a commodity.

Now is the price way too high? Yes, because there is a lot more gold hidden away than what as "artificially scarce". Also there is a ton of gold in off planet mining operations that could be started on asteroids and such, and further there is a ton of natural resources in Antarctica that have not yet been accounted for or mined.