"Well... unlike jewelery gold and silver used in weapons is... less valuable. They shine more but they're not the BEST. It's not as expensive as you thin it might be. Especially if you're talking about jewelery and the like. Totally nothing like that."

It was a matter of material, not cost, and frankly, he was sort of hoarding some gold... it conducts electricity VERY well, as well as, yanno, heat resistance. He needs that.

For robots.