You can only purchase points when you are in the process of transferring them to a travel partner (airline or hotel) and are short of the required amount.
Because direct purchases are expensive (3 cents per point), many users prefer indirect methods to acquire them more cheaply: buy amex points
: Using the Amex Offers or portals like Rakuten allows you to earn bonus points on everyday purchases, essentially "buying" extra points for the price of your standard shopping. You can only purchase points when you are