The option to purchase points is meant to be a way to top off your account with the last few points you might need to book a flight with points, not a method to get all the points needed for a flight. For example, I need 12,000 points for a flight, but only have 10,000 points in my account. Purchasing the additional 2,000 points for $60 may be a better option than paying the whole fare, approximately $180.
