I think I have a contact who sells nutraceuticals in the adult market.
They probably use an acquiring bank.
Located in France, they have a share capital of $430,000
So I'm pretty sure they have this information there, however it's still a fairly large structure, and I'm not sure it's their exclusive income.
Once I launch my adult site, I'm going to launch a sex Nutraceutiques website too.
If I manage to show enough presence on the market, according to my experience, the cash flow is quite substantial