Looking at my folio from our trip a few weeks ago to Amanoi/Amantaka. The latter charged me $9 ($3 each) to mail postcards to the U.S.
I can't remember the last time a luxury hotel has charged me for postcards, let alone $3 USD. Have I just gotten lucky? Leaves a bad taste in my mouth for whatever reason, especially considering the postcards came from Amantaka and were located in the room when we checked in.