You're better off leaving a ghost in there requesting to purchase Or dropping books. It's been months. it's clearly still being refreshed.
I'm pretty sure this isn't for sale. Plus it's been three months now. They either don't use these forums or have zero interest in selling if they did.
We, the forum members, and collective, want you to have the conversation aswell. run a spam bot ghost in the house, or in front of the sign... You'll either catch attention, or block a macro.