User blog comment:Monkeypolice188/GTA V Vs GTA Online/@comment-25171506-20150608183750/@comment-25261281-20150608185256

Because the Heists were there. The average payout for a mission in San Andreas was between 1,000 and 10,000 iirc. With all heists you're above 100,000. And with the last heist you can go over 20M.