Buy your malware here
Just give me your credit card details and the software is yours.
YouTube is doing the world a favour letting script kiddies get scammed but don't be fooled.
Someone more experience would expect this and use a stolen credit card and a vanilla Gmail. They might even have dedicated separate Bitcoin accounts for buying on the onion net.
If he didn't back door his sales tools he's an amateur and shouldn't be dealt with.
As Mr units said above, how nieve. But he wins either way and it's not like you can sell malware in shops now is it.