Appears, when Movalpolos is under weekly conquest-control by one of the three nations. - "Welkome to my vorder shop!" - "Kome vack again sometime!"
Bartabaq is not a typical Outpost Vendor. She only sells items, which normally are sold by Regional Vendors of Movalpolos. The prices are dependent on the current Allegiance Rank.
Updated 7/13/2010: Gives text about willing to buy evolith items from weak nationed adventurers.
For further information see Outpost Vendor.