I'm a subber, I have not spend a dime on buying extra packs.
I have yet to make a single credit of anything I find in thosse : I just keep deleting them. Nothing sells ever.
My wife gets a lotto ticket each month from her firm as part of some employee outreach thing. She hasn't won squat yet, though some of her cohorts went out and bought more tickets and eventually made their money back on a few of them. My wife not winning a thing on her freebies must mean that the lottery system is screwed up. That or the bazillions of people who pay to play it are.
Besides, if you're gambling to make money (fake or real), better come to the table with enough chips to last longer than a couple of hands.