I know this subject has been discussed in different ways before. However, I would like to pose the question as “ what would you pay for a mile”. This is an airline mile not a “starpoint” or other convertible award . This question is not what it is “worth”, but what you would pay for it. Assume you do not need the miles immediately and recognize that the miles may be devalued before you use them. For me, I would gladly pay $0.0025 per mile but would not pay $0.025 per mile. From time to time there are chances to “buy miles”, as paying your taxes with a credit card for a fee. Are these opportunities worthwhile? Assume you are only accumulating miles, you do not have a particular award as an objective.