Descartes

Level 5 of the Dungeon
[Shop] Duid's General Store
  a wand of acid (5) (216 gold)
  a scroll of blinking (90 gold)
  15 stones (18 gold)
  a +6 ring of dexterity (702 gold)
  a scroll of identify (24 gold)
  a potion of heal wounds (60 gold)
  16 stones (19 gold)
  a book of Conjurations (240 gold)
  a scroll of magic mapping (42 gold)
  a +0 hand crossbow (42 gold)
  a scroll of identify (24 gold)

Level 6 of the Dungeon
[Shop] Urphefom's Jewellery Boutique
  (Shop contents are unknown)
(0, 0, D:6)
  a ring of resist corrosion
(4, 6, D:6)
  a scroll of immolation
(5, -7, D:6)
  a ring of positive energy
(14, 8, D:6)
  11 gold pieces
(28, 7, D:6)
  10 gold pieces