It is just another dishonest pawn shop in a fancy building. The people are rude. The prices that they offer are ridiculous. They charge your more so they can take more of the profit.
I tried to sell some gold coins too. They were offering me significantly less than I could get on eBay, or any other gold dealer I spoke with. I was being offered as much as $4,000 elsewhere. They were offering $1,500.
They blatantly rip people off that do not know any better.