PEAuction hasn't been collecting auction data since January 2014.
I sent the owner an email to ask him to reset his server, but received no response.
Data on MyTwoPecs is even older - going by the MarketGraphs, it stopped collecting data in about May 2009.
The EntropiaBay site is also gone.
EntropiaLife has an auction tracker page (http://www.entropialife.com/AuctionData.aspx), but I'm not sure how well that's working, as I only see minerals data being collected for Arkadia and Cyrene.
I think Candyman was considering his own auction data collection for bobthebuilder once PEAuction stopped being accurate. I'm not sure if he went ahead with that or not though.