Booked two tickets, CDG to JFK, in Blue for 40,700 miles each. Was able to confirm mint for both tickets, 2 certs each and $60 cash fee each. Overall, I would say this is a very good points redemption and use of certificates (especially considering I get 10% of the points back once I fly). Will probably use the remaining two certs on a transcon to California. I may actually buy some JetBlue points with the current 90% bonus promotion after this, the points can have pretty good value.