The following is a list of books you can find at the Armicustos Librarian and what they cost.
Title
Crafting Poleaxe Heads
Steel Lore
Tindremic Messing Lore
Tindremic Plate Armor
Tungsteel Lore
Skill
Crafting
Material Lore
Crafting
Crafting
Material Lore
Costs
10g
2g 50s
10g
10g
10g