Achira

Collects herbs from far away places (like dangerous bogs and mountainsides) and sells them for a price. Is not swayed by sob stories who seek the herbs he possesses. Enjoys the danger and is feared by some due to it

Maybe a necromancer?
To build on Lev's idea, is more interested in a profit than others. Willing to sell away valuable herbs and spells but won't give instructions on how to use them, just so they'll come back needing more help when things go wrong