"Legends of the Ferengi" is a hilarious spoof on fairy tales and folklore anthologies. As a folklorist myself, I found dozens of in-jokes that had me literally doubled over with laughter.
In the DS9 episode "Rules of Aquisition," the Ferengi Pel claims to know all 285 Rules of Aquisition plus the commentaries. This book gives you some of those commentaries --- at least, for the 70 Rules that were actually revealed on the series. The authors, Ira Behr and Robert Wolfe, wrote most of the DS9 Ferengi episodes. Now they give you the story behind each of the Rules, including #113, the "Rule that dare not speak its name."
You will also learn the first two words that any Ferengi learns in the Hew-Mon language ("No refunds"), The ten most famous insults in Ferengi history (see p.32) and the story of the infamous villain Drek, M.H.N.L.I.I. (May His Name Live In Infamy), who actually cut his prices and gave his customers BARGAINS, thereby causing the Ferengi economy to crash. Which is one reason why every Ferengi child is duly warned about the dangers of Real Life through supernatural horror stories about that bogeyman of bogeymen -- the Smiling Partner! And so on. I thoroughly enjoyed this book, which has lots of great B&W stills from the series, too. Drek was right --- some things really ARE bargains!