Blugie will not sell to you until your faction with The Bellywhumpers is at least 30,000. After you have done all of the faction quests, you will need to kill hundreds of Bonediggers (+25 per kill) and repeat the quest The Bellywhumper Harvest (+1,000 per completion) dozens of times.
Klok Tulren says that the burynai have an ancient artifact they have agreed to sell to him, but have not as of yet delivered it. He would like me to head to the Bellywhumper camp and find out what is causing the delay.
Retrieve the artifact from Hammin in the Bellywhumper Burrows.
Speak with Hammin in the Bellywhumper Burrows
I have spoken with Hammin.
Trade for the sealed stone case.
I have retrieved the sealed stone case from Hammin.
Hammin has given me the sealed stone case.
Return the sealed stone case to Klok Tulren.
Speak with Klok Tulren
I have completed the task Klok Tulren gave me.
I have returned the case to Klok Tulren.
I was unwittingly lead into something of an ambush, where I ended up having to gain favor from the burynai before receiving the artifact. Regardless, I have delivered the artifact to Klok Tulren.