I always wanted this book as its always referred to when discussing any fiqh doctrine. It is written in a dars manner so a lot of detail. Please ensure you have a contact with learned brothers if confused. But otherwise brilliant. Even though its not written to refute anyone, it discusses the minute details of usool of ahnaaf, destroying the accusers who claim hanafis are contradictory to Quran and Sunnah.
As far as the service is concerned, it is 5 stars. I have been a customer with the Madani Propagation bookstore for over 2 years and have never got dissapointed. I am so thankful for having an authentic Sunni online shop. Well done and jazakumullah khairan!