This item is acquired in-game. See its sources below.
Re-learn any inscription recipes that you learned via questing for your Tool of the Trade, but forgot after switching professions.
Spell effects bound to this item, from first-party game data.
Book of Techniques: Sanguine Feather Quill of Lana'thel is not traded on the Auction House, so it has no Auction House price. Its first-party game data (identity, effects and sources) is read from the official World of Warcraft client build.
Read from the World of Warcraft client build files.
The 10 recipes nearest to Book of Techniques: Sanguine Feather Quill of Lana'thel in required skill among Recipe > Inscription.
The lowest listed price among them is Technique: Algari Competitor's Emblem at 7 gold in the US Auction House.
Built from the World of Warcraft client build files and recorded Auction House snapshots.
TheWoWDB
