Hello,
With merc'ing almost constant on Asura and a lot of people paying them gil, zoning, lotting on the item, and returning to town. Let's be done with it and have an NPC that sells all gear, from all NM's. If people are willing to buy all their gear without even fighting a monster, then this offers no difference whatsoever.
It also ensures that the gil doesn't end up in 'the wrong hands'.