Im relatively new to miles and dont have status yet. I am trying to book from MIA to EZE 10/24 - 11/1. There are no savers available from MIA but business 50k is available which is less than the 60k econ anytime. I am able to take a 20k econ back but if I were to do bus saver back it would cost me about about 11k miles that i do not have and cost around $300 i think. Ive never flown business on an international flight and wondering if its worth it to buy the extra miles.