What's the Cost of a Cookie Paywall?

We only found out 13 websites using specifically these cookie paywall. So it doesn't seem to be a much adopted practice so far but we only conducted this analysis on a few thousand website which is basically peanuts compared to what we could actually do on a large scale. The most expensive was 75 euros a year. The lowest I think was like 36 euros only, I don't know how it amounts in Doris. It's not necessarily that much let's say compared to the actual price you would have to pay for some newspaper.