The following is a list of books you can find at the Ordo Rutorum Librarian and what they cost.
Title
Almine Lore
Arcronite Lore
Chalk Glance Lore
Gem Metal Lore
Lupium Lore
Sanguinite Lore
Skadite Lore
Steel Lore
Tungsteel Lore
Tindremic Messing Lore
Waterstone Lore
Skill
Material Lore
Material Lore
Material Lore
Material Lore
Material Lore
Material Lore
Material Lore
Material Lore
Material Lore
Material Lore
Material Lore
Cost
2g 50s
50g
5g
10g
10g
10g
10g
2g 50s
10g
10g
10g