Foreclosure Auction Sale Prices

[Brad D.]

What's the best and most efficient way to get information of what houses are selling at in the foreclosure county auctions. It seems the houses are listed on auction.com, and if they are sold, they disappear. 

I did search on zillow for recently sold houses at a below market range. The problem with this is that I don't know if those were sold at at foreclosure auction or in some shady way between associates, or if it was  just structured that way for business purposes. 

I'm trying to establish the level of discount people are seeing in the last year when they buy at auction in this area where I will be moving in the near future.