Affiliate Marketing Secrets

I have a mate of mine who in simple words “easily sold”, if something looks good he’ll dive at it, he doesn’t believe in the too good to be true scenario. He’s recently come across something he likes to call “expansion marketing” in which he works as an affiliate for Healthcare product corporation. I’m not sure if you understand this term, basically you pay a base fee to join this affiliate group in which you can start referring other people to join gaining credit points per person beneath you as well as commission. Now it looks all good, but ive always believed if it was too good to be true then it probably is, no such thing as a business that doesnt screw someone over. Money doesn’t pop out of nowhere, someone gets screwed. I’d just like to know is he in any way justified in a stable position with this “job”
My issues with it are:
– It looks like a job with minimal effort and high reward
– Seems to have no flaws in its structural system
– Everybody wins in this business
– You can have a constant pay cheque of over 60k
My friend is also a kind of person who prefers to only present the positive so that his plans seem flawless which in the end smacks him in the back of the head cus the problems start rising. So basically, Healthcare affiliates, stable job or no? if its legit tell me why, if it isnt give me all the dirt 🙂