I'm pretty sure the comment you are replying to is talking about the group/company/person that runs the bundle. They ask for 20,000 keys, sell 150 legitimately,

I'm pretty sure the comment you are replying to is talking about the group/company/person that runs the bundle. They ask for 20,000 keys, sell 150 legitimately, and then sell the rest of the 20,000 on the gray/black market. Reselling a key you bought legitimately isn't the issue here AFAICT.