http://www.tektek.org/gaia/worth.php
But for neopets safety deposit box.
I think that uses the source code to get the item ID, check the prize with a database(which we have) and adds them all, giving both the total price of whole inventory, and individual price of items.
The idea came to me when I realized I had been hoarding items for almost 5 years now, and I don't know which of those items in the 50 pages are worth a decent amount of np...
If this was already done/suggested, then would anybody link me?