There's several markets on Atys. If you are looking for NPC Merchants (Hawker, in town User_Manual#Merchants) or trainers that's not the place.

Players can organize black market and mini-markets.

On Black Market you will find very nice and expense stuffs (already crafted, as armor and weapons), it's a auction sale. See for ex in 2019 Player 22. Marché Noir the April 28th 2019.

While mini-maket are much more to help youngs homins, with moderate prices. See the forum. Date: Tria, Floris 9, 3e CA 2603 (May 25th 2019)