I've been pondering whether Aux should do AH scans like auctioneer. It would actually be very trivial to implement but I don't want to add bloat without good reasons. Those who would like to see it, could you provide some reasons why?
As for auctioneer-like AH snapshots, while conceptually nifty, it seems to me they're completely pointless as the data quickly loses its value over time and without the full scan functionality from later expansions scanning the whole AH takes like 30 minutes, so most of it will already be old when you first get to look at it.
This leaves the historical value which I guess could be interesting but also doesn't seem that useful most of the time except to provide price suggestions in the rare cases when there are no other auctions on the AH (which mostly happens only for rare items and then it'll probably be inaccurate anyway ...) And it's not clear what the historical value should even be exactly. A simple average? Calculated by a lua function editable by the user that gets an array of historical buyout prices as input? etc. ...