Originally Posted by
Efrem
With option 3 vs. option 2, you'll end up 66,000 miles down but $1,600 up. This is equivalent to paying 2.4¢ per mile if you buy the ticket. If you think miles are worth at least 2.4¢, you should go with option 3 (buy the ticket). If you think they're worth less than that, go with option 2 (use the miles).
This is where I get confused. How/why did you use 66,000 to get the per mile cost? Why not use 55,000, which works out to 2.9 cents?