I've got mixed feelings about this product. I bought it primarily based on the title "Taverns and Bar Brawls", to help me prepare for an upcoming game that I was planning to feature a bar brawl. So I was surprised to find that out of 22 pages, there was only 1 paragraph dedicated to bar brawls, and it basically says that players only do it because the DM lets them get away with it, so you should punish them so they won't do it again. Odd.
The rest of the publication does a better job, but at times reads more like a thesis paper than a sourcebook. Lots of information is given on the ins and outs of taverns including costs for various goods and services, entertainment and employment, plot twists, NPCs, and descriptions and floorplans for various types of taverns. I'll probably refer to this from time to time in the future, but I was disappointed that it didn't contain more info on bar brawls, considering that's half the title.