TetraCalyx

Level 4 of the Dungeon
[Shop] Kaiti's Armour Shoppe
  (Shop contents are unknown)
(0, 0, D:4)
  a +0 ring mail
(4, 3, D:4)
  a potion of heal wounds
(8, 8, D:4)
  18 gold pieces

Level 5 of the Dungeon