Why is a Sharp Eyes 30 Mastery Book worthless? I thought Sharp Eyes itself was a highly wanted skill amongst parties/boss runs and popular among skill mules?
It's a common drop from a extremely camped monster, Skelegons/Skelosaurus. They're so common, people just drop them in the Free Market to free up room in their inventory. Just because a skill is useful doesn't mean it makes the mastery books worth something.
Ah, I see. Thanks for the explanation. I'm assuming Genesis 20/30 are rarer, therefore more expensive then, right?