I'm surprised something like this hasn't been implemented yet.
I'd love to see use of the HSP or other auctioneer data to evaluate a character's "net worth." (i.e. evaluated resell value of items in inventory/bank/mailbox). Would it be possible to code as a module, or do you think a whole separate addon would be needed? I can't be the only one with a bank character or two that has a bunch of junk on it, and with financial proof, might be motivated enough to do something about that bank clutter :)
I have found something close.. Titan Worth or something but it's outdated and unusable. Something within the auctioneer package would be much more preferable.
have you looked at Auc-Util-BigPicture? http://forums.norganna.org/discussion/5855/coding-a-new-module/#Item_54, sounds like just what you were looking for.