I have thoroughly enjoyed the book(s) and have found that the depth it has given me in game play for my Eclipse Caste Character well worth the money. Also, the sheer amount of spells is exciting . The book is also a good buy because certain spells that are not mentioned within the core book are needed for the "Return to the Tomb of 5 Corners" Campaign. I also enjoyed the addition of necromancy and its origins. Although being more specific, it offers a plethora of new avenues to explore in Exalted Campaigns. I also had no trouble downloading my copy.