So after Seeker gets done messing around in Unity City, he's going to PlaneShift out and then back and try to make his way to Gundrin. Once he reaches the brothers, he'll inform them that he has a large supply of materials to sell them, and that what supplies he has will make them rich beyond their wildest dreams. Seeker would like to negotiate a price to sell them the rights to scavenge the purple worm. He would like 10,000gp for the right to scavenge it and a vial of it's venom, and any gems still resided in it's stomach. He will offer them rights to use all the teeth and the carapace armor, and any other items they find other than what Seeker intends to get for his trouble.
(since it's online, i'm assuming there will be negotiations and such. Not sure how to do those.)