Some sellers try to hide their lack of compliance. They might have a tiny 'By using this site, you agree to our terms' checkbox that includes an age requirement, but it's not obvious. They might also use vague language like 'You must be of legal age in your country' without specifying what that is. That's a way to shift responsibility onto you.

Another trick is to make age verification seem optional. They might say 'We recommend you are 21+' or 'Most of our customers are adults,' which sounds fine but isn't a real policy. This is a way to seem compliant without actually being so. Be cautious of sites that have a lot of 'we're not responsible' language, too. If they're constantly disclaiming, they might be trying to cover up something.