Efficiency

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 dagger
  a +0 leather armour
  a +0 dagger
  an orc corpse
  a frilled lizard corpse

Level 4 of the Dungeon
(0, 0, D:4)
  2 gold pieces

Level 5 of the Dungeon
[Shop] Jobedgh's Weapon Boutique
  a +4 vampiric short sword (341 gold)
  a +0 flail (38 gold)
  a +0 trident (38 gold)
  a +0 club (11 gold)
  a +0 hand axe (33 gold)
  a +0 whip (27 gold)
  a +5 long sword of holy wrath (366 gold)
  24 stones (26 gold)
  a +2 hunting sling of freezing (161 gold)
  20 stones (22 gold)
  the +9 hunting sling "Soneqal" {vorpal, rF+ Will- Dex+3} (696 gold)
    Any ammunition fired from it inflicts extra damage upon your enemies.
    
    Dex:       It affects your dexterity (+3).
    rF:        It protects you from fire.
    Will:      It decreases your willpower.
  a +0 short sword (33 gold)
  a +0 glaive (71 gold)
  a +0 dagger (22 gold)
  a +0 quarterstaff (44 gold)
[Shop] Xecu's Distillery
  (Shop contents are unknown)
(0, 0, D:5)
  8 gold pieces
(3, -6, D:5)
  a book of Death
(3, 0, D:5)
  a +0 buckler

Level 6 of the Dungeon
[Shop] Usiz's Firing Range
  a +0 fustibalus (195 gold)
  a +0 arbalest (58 gold)
  5 large rocks (45 gold)
  19 bolts (49 gold)
  a +0 hunting sling (19 gold)
  14 sling bullets (91 gold)
  7 javelins (72 gold)
  4 javelins (41 gold)
  32 sling bullets (208 gold)
(0, 0, D:6)
  a javelin
(1, -1, D:6)
  a bolt
(3, -1, D:6)
  an atropa-tipped dart
(5, -2, D:6)
  a sling bullet (still there?)
  an arrow (still there?)
(5, -1, D:6)
  a throwing net
(5, 0, D:6)
  an arrow (still there?)
  a sling bullet (still there?)