Just to clarify for those unaware, that's not how the buyer window functions on EQLive.
The buyer window is populated by players loading into the Bazaar with that specific item in their inventory.
Plenty of items exist on servers, but are not listed in the buyer window because they exist on players who have never step foot in the bazaar, having long since quit. This would be a prime example of one. Basically anyone who hasn't zoned into the bazaar since 2005-6 would be excluded for example. So all those people who quit before 2005/6, they may have trade able items not listed in Buyer because they never step foot in the zone.
That being said, its presence there is irrelevant. They added an NPC in game that sells most every item removed from game (Manastones, Ornate Velium Pendants, CoS, etc.) for huge sums of plat to handle inflation:
http://everquest.allakhazam.com/db/npc.html?id=47492
The items that exist on live may have originated from that and therefore their presence there doesn't prove anything on when it was removed.