Is there a Bourbon equivalent to WineMarketJournal?

Not sure if this is Wine Talk, it’s not Commerce Corner as I don’t yet have anything to sell.

A friend asked me to help him price some wine and bourbon to sell. Wine is easy, WineMarketJournal does the job. For Bourbon, I didn’t know. I see there’s something called Bottle Blue Book? Are there others? What’s the ‘gold standard’? Do any sweep in all auction data like WMJ or is the bourbon market different, more low quantity private transactions?

Help please!

on facebook there is a group called BSM - Value Reference where you can search, post sales, and ask for values (see their posting rules) which is pretty good.