Can You Buy Coins Directly From the U.S. Mint?

By GovMint :

When purchasing coins directly from the U.S. Mint, some distinctions exist between bullion and collectible coins.

Bullion Coins: Bullion coins, such as American Silver and Gold Eagles, cannot be bought directly from the U.S. Mint. Instead, they can be acquired through authorized distributors or dealers. The U.S. Mint does not sell bullion coins directly to the public but instead produces them for distribution through a network of authorized purchasers.

Collectible Coins: In contrast, collectible coins like commemorative coins, Proof Sets, and limited-edition coins are readily available directly from the U.S. Mint. These coins can be conveniently bought through the U.S. Mint's website or catalog but are also available through third-party dealers. 

Sources Used:

https://catalog.usmint.gov/coin-programs/bullion-authorized-purchasers.html