Currently Marko is selling an amulet of great power:
AC +4
Charisma +4
Negative Energy Resistance 5/-
In return he is looking for thunderstones, holy water or charisma ion stones.
Also for sale: Cloack of protection+4, Boots of striding (constitution) +4, Nynph cloack+4, amulet of wisdom +4, bracer of dexterity +4. And can make custom items if you got the right equipment for trade.