“The U.S. Mint, which never ran out of supply before, has sold out of its 1-ounce gold and silver coins...”
When I read this, I did a quick check at their web site. They still have coins to sell.
But you won’t actually receive them for months.
Are they selling them at the current metal price or their own price? If you look closely they are selling what coins they have at a substantial mark up from current metal value.