Just want to let travellers know that you don't need to pay the airport departure tax when you fly an international flight from Manaus as we were told that we need to pay 72 R for that. 

If you want to save money and not take a taxi, you can take Bus 813(small bus) R4.20 or 306(big bus) R2.75 from the airport to downtown,  or Taxi is for R58 fixed price!!