This personally IS my business model, less fleshed out than mine with not as many twists but still ... I don't know what to say about this at all, other than people will ALWAYS be cheap and think it is of quality.
I do not agree with price point being a major factor as if you can actually show them real results, then simply put you are on the road to making money. I only charge a upfront fee of 30% of their projected spend budget for several local businesses and a few global businesses. I won't reveal my twists but this skeleton doesn't work straight out of the box as it requires 3 major things to work.
1. psychology - you need to learn how to speak to people's emotions and force them to buy from you. Get rid of their doubts, know which emotions to trigger by using what combination of words, voice tone, body language, etc to use at when to use it. It needs to be authentic, so this bullshit spam CPA will on ruin the method.
2. A QUALITY SERVICE OR PRODUCT - this is vital as 99% of you will simply kill this with spamming crappy aliexpress bullshit no one wants or needs or some cpa dating affiliate offer that again is such low quality Donald Trump will wipe his ass with it before noon. Cheap chinese bullshit is NOT quality, think shrewd with your head and not with your lazy dreams of easy fast money so you don't need to work.
3. Long Term Game Plan - You need to stop trying to supplement a job before you get your chickens what they need to continually hatch their eggs. Investing your money back into various things for asset income flow is much more smart than being a douche bag that just spams with email blasts hoping another sucker will buy your low quality garbage service or product.
This is no big secret revealed method, in fact this is exactly what marketing firms and business have been doing for years already. Thank the OP for putting it into the light, but also curse him for giving false "hope" to people. Yes, OP found suckers in the market, but you must not rely simply on suckers like MLM does. If anyone actually put some quality inside the business pitch and model, then that would change the game completely.