I believe OP tried to say that such type of posts should not be allowed on that board that's what I understood from his words. When a post/thread is posted then it will be available for everyone and OP wanted to say that such posts/threads should not be allowed to be posted in that board.

I have also noticed such account sales and those are obviously against the rules of this forum and such posts/threads shouldn't be allowed at any cost. I also believe that such users who consistently make such account sale related posts should get temp bans or permanent bans.