On a different note, with so few of that book in circulation, that 30k price looks pretty attractive.
How do you imagine that would work? Maybe we can add it in .
My thinking is that if the DB doesn't pull prices from auctions and TP transactions since they aren't priced through the browser, it would have to be through user submissions one of two ways:
1. Someone can code a program for TP lot creation (or auction listings) and have it upload pricing stats for items. Take the median price aggregated over X amount of entries over Y time. The higher the X value and shorter Y interval, the higher the accuracy of the estimated price (list percentage). Program benefit can also include a re-listing function for items when they fall off the TP, although if you're not watching your bids then what's the point?
2. Allow users to submit a suggested price and use the same X, Y values to calculate.