I know squat about pvp here, cuz I play crafters.
But my blacksmith whom has NO poisoning, even sells his NON dp plain ore shurikens from time to time, as is unpoisoned, on my vendor !
I guess folks buy my dp and poison their own shurikens or they're tossing em unpoisoned.
I tried to raise the poison skill on my blacksmith and my scribe alchemist thinking..he could dp the shurikens my smith made and my BRAIN WENT NUMB at 34.9 and I quit several times. Sooo I guess poisoning skill just is not my cup of tea ! Too many skills to 100.0 and up as it is on my crafters *with souldstones* even !
So roughly guessing sir, and I do remember ye name here. Did ya not also have some carpentry when you were here ? On my carp. vendors the addon deeds still sell, and many storage containers still sell out well, and while less active furniture still sells, just slower than my addons and containers sell out. And if ya did have carpentry with SA yu can make chicken coops now !

They sell out too.
DP shurikens sell & will sell again.. esp if restocked all the time. And if not, lots of things you mine up will SELL for even more, what with newer gems and all now being so useful etc. that are mined up.
Ingots always sell too. And there are more uses with SA, for mined up granite and sand, nowadays too.