The lowest listed price among them is Garn Nighthowl at 100 gold in the US Auction House.
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Shackled Ur'zul Fits
Items Numbered Next to Shackled Ur'zul
Blizzard numbers items as they are created, so the named items next to ID 152789 (152783 to 152795) were usually added in the same batch as Shackled Ur'zul: the same quest line, zone, vendor or reward set.
Jomubu's Juju PowderID 152785 · Quest"It turns transparent when exposed to sunlight."
Call of the DevourerID 152786 · Miscellaneous"Build an effigy of bone. Bone from the imps, bone from the fiends, bone from the ur'zul. Only then can the..."
Relic of the KeepersID 152787 · Quest"A traditional token offering of respect, to the statues of the Keepers, in Zul'Ahjin."
Lightforged WarframeID 152788 · Miscellaneous · item level 30"Teaches you how to summon this mount. This is a flying mount."
Vile FiendID 152790 · Miscellaneous · item level 10"Teaches you how to summon this mount."