Interesting to see some of the comments, and I understand and appreciate that the buyer has to take some responsibility.
But that said, it seems some of the comments are suggesting that my idea is not acceptable - the idea is simple-
Mention on the forum you have a game for sale = you agree that you will not object to a member posting about the experience.
Sure, some buyers are anal and we all know the type - I bet they'll get shot down in flames when they post that they found two lamps that were not new!!
Of course we'd expect a disgruntled buyer to try and negotiate first. Of course blatantly incorrect things can be removed.
But to those who are against a rule that says -
Mention on the forum you have a game for sale = you agree that you will not object to a member posting about the experience.
What are you afraid of?