This method of obtaining money takes some playthrough of the game. The requirements are to get someone to level 11 in the merchant class, and get your armor shop in norende high enough for the blessed shield. Next is to get into a fight. In the fight you want to set the person with the blessed shield to target everyone with it. This will cast cura and make sure your team stays alive (someone with a good amount of mind increases the healing). Next get the fight down to one enemy. Have one team member hit the enemy with a normal attack, then have the merchant use the Big Pharma skill learned at lv 11 merchant. Big pharma restores hp to the enemy and gives you PG equal to the amount healed. If your big pharma heals all the damage done, this can then be run on auto with the blessed shield on an infinite loop to earn money. Speed up the battles using right on the d-pad and you're making money in no time. For maximum money making you want your Big Pharma user to have a high mind so it can heal more.