In link 1 the guy that offered the Max's Head does not own it anymore so it can really be used as proof. Also you did not account for overpay. In link 2, you need to find the offers and post them, not have us look for them. And in link 3, just because he is selling for 2 buds doesn't change the value of it. Overall, you need to find proof of sales and none of these are really valid as proof. Downvote.

Proof of sales, b/os do not mean anything and offers have to be recent to be valid. Downvote.

If i went and offered 10 buds would you change the price again because of my offer? No actual proof, downvote.