This is the first time I've read here in the forum that the private key is being sold, which is where most of the people here, including me, always say that only we should know our private key and it shouldn't get to anyone.

But you're weird dude, why? Are you that desperate and can't think of a way to make money here on the forum? What came to your mind and what private key did you think of selling? what is it about that address that makes you decide to sell it? I'm just asking.