- I saw that we could buy very cheap traffic from Taboola (from 0.01€ in ES)
- I have a good AdSense account (500€ to 1500€ a day). We send quality traffic to Google (0.82€ to 1.48€ in ES)
🤔
So I decided to do a simple test:
I put an AdSense banner on one of our advertorial.
And that covered 28% of the cost of buying the clicks.
Not bad.
So it's time to spend some more time on this.
I launched a second campaign with a new page with way more ads.
But I need more headlines with high CTR to be able to buy such cheap traffic.
I was able to buy cheap traffic because of of my headlines worked REALLY well:

Will I be able to make some profits?
Will I be able to scale it up to 50€ a day in profit?
Will I get my AdSense traffic limit or a ban?
Follow this thread to know 
I used to make $3-4k/day with Adsense arbitrage but with solo ad (email blast) traffic, this is very interesting. I remember vast majority of the $ was an ad unit immediately under article title, then I had a big unit about 2-3 paragraphs down and a very big one at bottom. This was however mostly mobile traffic and various quality.
Following 
When it comes to bans I would either set up a very high quality website with articles that you will promote (NOT a single-page anything) (and even then it's a risk) or give up the idea of using Adsense altogether and maybe try Media.net
Naturally, when getting banned is just a "possibility maybe" and you think that with your proper set up "there's no sense for them to ban you", you underestimate what a ban means.
That changes after you're banned 1 day ahead of receiving a $140k payout and nearly go broke IRL
This looks interesting! 
Pay close attention to the headline and image combination for when it comes to a strong CTR. Once your vCTR is strong enough (2%+), you can potentially make it work pretty well.
Also, diversifying your monetization options is an important step too. Content arbitragers don't like hanging all of their efforts on AdSense only, or a specific monetization only.
What they do is blend in several monetization platforms on their website to both minimize the risk as well increase the revenue.
to make $3-$4k off adsense arbitrage...that too from solo ads, you might have sent 1000000s of emails to random people.
And if these emails are getting opened by real people, then you wud probably make way more money by selling this email list in black market instead of using it for adsense arbitrage.
Is this really solo emails or you got the email list from torrent website? Because if someone was to do this today, it's won't be profitable.
Thank you everybody here for your valuable comments!
I'm using the same adsense account and domains that we are using to generate about 27k clicks a day to AdSense.
That reduces the chances of getting a ban, but increases the loss if a ban comes.
Let's see...
So far we have launched two advertorial:
One has a RPM of 6.65€ (we have to be more aggressive with the ads on this one)
The second one has a RPM of 13.94€
Yesterday we made some small profit, not too bad 
I think that next month we'll be ready to try to scale this up.