Why it matters, and...
Willing To Pay - The amount a buyer is 'willing to pay' is the unofficial price at the time an item is reported sold.
Basically, it's the selling price both a buyer and seller have agreed upon.
There's a time gap between the reported price and when a seller pays.
Because of this, sold prices are not 'official' until the buyer has paid.
On very rare occasions for most venues. A buyer or seller may back out, causing a sale to fall through.
- Gather as many selling (sold) prices as possible from multiple venues, to find a ballpark value.
- Then get help from reputable specialist to verify your DIY ballpark value. Or, for any important buy or sell decisions.