You can purchase American Silver Eagles online or at a local gold/silver store.
First, let’s explore several of the online options to consider (see links below). It is your responsibility to do your due diligence before you make a purchase. (I have no financial or personal relationship with any of the companies listed.)
Most American Silver Eagles will be selling $1.50 to $3.00 over the spot price for one ounce of silver (subject to change).