Simply load up the above-mentioned Memory and keep stealing their money, then quit the game. PS: In case you’re already further along in the story, that’s no problem.
This allows you to get the “Business And Pleasure” achievement/trophy fast for earning 50,000 Reales, and at the same time you’ll be able to buy all available upgrades, weapons & more early on in the game! In 7 minutes time you can earn over 35,000 Reales! 😀 STEP 4: Now repeat the previous steps over and over until you have enough money, when you’re done EXIT the Sequence, and then EXIT the game to the Main Menu! That way the game will save the money you collected. But now they have their money again, yet your total Reales is still higher! Which means you can pickpocket them AGAIN! STEP 3: Right after you’ve stolen the Templars money, around when the old man says that he’ll be waiting for you, go to “Reload Last Checkpoint” so you end up back in time to before you stole their money.
STEP 2: Play Sequence 2 Memory 3, until you get to the “Pickpocket All Templars” optional objective with the 3 Templars standing around a table and pickpocket them as instructed. STEP 1: This only works once you get up to Sequence 2 Memory 3 in the story mode, then you can keep on doing it.