Remember that monster’s items trade-in for EXP and money from SE_L Online?
I think that was a nice system, you killed mob, give the material item you get from that mob to NPC for a nice EXP, you even can sell those items for decent price to someone else.
The quest will be like… bring10 of Vubbe tokens , you will get a Lv2 EXP card.
For player that prefer grinding, you can just sell these items for an extra money.
situation win-win I guess 
