Makes no sense why people would want to buy AWS accounts in the first place since they're tied to a credit card whose cardholder can call their bank and dispute the charges made to it which'll result in AWS closing the account.
Heck, even buying a VCC from these guys makes more sense than this although that's also just as guaranteed to work as well as hiding somewhere for How Not To Be Seen (spoiler alert: it isn't, and you should watch the Monty Python skit if you haven't already so you know what I'm talking about).
I get that SES is a spammer's paradise to avoid CAN SPAM Act related account busting by the companies providing the email service but that only underscores that the majority of people that'll buy this kind of stuff aren't going to bother reading scam alerts sadly.
Especially since I don't know of any escrows here who are willing to handle account or gift card sales.
Also note that most, if not all the accounts sold on this forum are hacked or created using falsified documents.
It shouldn't be a surprise that participants of this unscrupulous activity would take advantage of you if given the chance.
Is there a password database from AWS floating around somewhere? I doubt AWS had a data breach, so given that it's stupidly easy to make up personal details on registration (just use random name/address generator websites), I'm inclined to believe that's how pretty much all of accounts being sold were made.