First of all I‘d like to say you are doing a great job. I was looking for a site like this as I was comparing prices on different auctioneers manually.
However it‘s very important to have the latest auctions added more quickly. Most auctioneers have already passed March auction and the database is as from January. So the latest two auctions are missing – actually it‘s six if you take contemplate all of them three auctioneers.
Also a nice benefit would be the option to see more auction results in list of an item. On the detailed page of a bottled (with Charts etc) it only allows me to see the „latest observations“. How about a „show further results“ button?