Why why buy gold buffalo coin? That is a good question. The gold's value keep on soaring and add to that the value of the coin (rarity and age) then you have a very valuable investment. Mom had been collecting gold coins and when the time came that she needed money to pay off some debts, she easily sold some of her coins. It's her, who taught me invest in gold coins. Hubs and I have several pieces that we plan to pass on to our kids.