Sometimes a transaction that constitutes a price point runs into a problem. Some good examples are an item bought but lost in the mail, an item that the seller lost or sold elsewhere, or an item that was advertised as mint but was damaged in transit to the buyer.
We believe that these are valid price points as the buyer demonstrated their intention to pay that amount for a mint or near-mint item.
Buyer's intent is based solely on how the item was advertised by the seller. As long as the item was advertised as mint or near-mint, it can be reasonably assumed that the buyer paid an amount that they felt a mint/near-mint item was worth at that moment in time.
This also applies to items advertised with stock photos, photos of only one side, or low-quality photos. In those cases, the buyer's intent is based on the listing's written description and other indicators like the condition marker on eBay ("new" vs. "used").