There's a big ol' scam there. You didn't think this was a good deal did you?
Since I'm not buying gold collector coins & I have zero knowledge about them, not particularly. However, nobody is hiding anything & all sales come with full disclosure so scam is not the right word. Transaction is what you;re looking for.
On the other hand, when our President decides to buy all the gold in the nation, under threat of law, they seem like quite a good investment, since coins & other goods with intrinsic value were spared.