Many collectors and investors use major online retailers that are also Authorized Purchasers or work closely with them:
: Offers various conditions, including "MintSealed" tubes of 20 coins.
Bullion coins are priced based on the current spot price of the metal plus a dealer premium. 3. Official List of Authorized Purchasers
The U.S. Mint sell bullion (regular uncirculated) American Eagles directly to the public. Instead, it distributes them through a small network of Authorized Purchasers (APs) , who then sell to local and national dealers.
: One of the largest dealers and an official U.S. Mint AP.