The Cuban postal system (Correos de Cuba) is both a cheap way for locals to communicate and a source of foreign revenue. See, Cuba produces two sets of postcards and two corresponding postage rates:
- A touristic card aimed at foreigners costs approximately US1.50 to buy and post internationally
- A corresponding Cuban propaganda post card with the obligatory Fidel Castro or José Martí quote costs an unbelievably cheap ~US$0.06 (1.45 CUP) to purchase and send.