Could be hacked or otherwise illegitimately obtained PayPal accounts or funds of questionable legality. Probably wouldn't want to use their own bank account with something like that.
That's kind of what I was assuming, that the business they were doing together wasn't strictly legitimate--and that's being kind as to my thoughts on that, assuming I were to give colires the benefit of the doubt. I don't believe for a moment that the two accounts represent two different individuals.
Keep in mind that colires is doing "business" here (selling AWS, PayPal, exchange accounts etc) in a way that you can't really do with your real identity.
Indeed.