Quoted from latenite04:
Is this calculated from all sales or is there a look back period? As pinside gets older and there is more sales data it's neat to see that a pin sold for $500 10 years ago but it's not that helpful in determining current value. A nice feature would be the ability to set a begin date like 1 year or 18 months back and get values based on that date range. If the values on the game pages are calculated periodically and stored in a database this could be tough but if they are calculated on the fly when the page loads it doesn't seem like that tough of a filter to write.
This is getting closer to the point of my original question. I'm not saying I even care about the values at all - I just want to know how they work. I had originally thought they were automatically generated as a mean of the marketplace sales of the machines, but seeing as how there have been several machines sold at various costs over the past year, and the value hasn't changed at all, it makes me think there is some sort of fixed value in place instead. Just curious guys... just curious, it's not that deep