Efficiency

Level 4 of the Dungeon
[Shop] Wumyilub's Antique Weapon Emporium
  a +0 flail (66 gold)
  a +0 broad axe (76 gold)
  the +7 pair of quick blades "Gyre" and "Gimble" {protect} (1140 gold)
    It grants its wielder temporary protection when it strikes (+7 to AC).
  a +0 shortbow of flaming (140 gold)
  a +0 quarterstaff (76 gold)
  a +0 trident (66 gold)
(0, 0, D:4)
  a potion of heal wounds

Level 5 of the Dungeon
(0, 0, D:5)
  15 gold pieces
(6, -5, D:5)
  8 stones

Level 6 of the Dungeon

Level 7 of the Dungeon
(9, -3, D:7)
  22 stones