Efficiency

Level 4 of the Dungeon
(0, 0, D:4)
  8 stones
(14, -1, D:4)
  7 gold pieces

Level 5 of the Dungeon
(0, 0, D:5)
  a worm corpse
(5, -12, D:5)
  15 stones
(19, -39, D:5)
  a +0 short sword
(41, -1, D:5)
  23 stones

Level 6 of the Dungeon
[Shop] Sapleg's Antique Weapon Boutique
  a +0 hand axe of flaming (170 gold)
  a +2 vorpal flail (395 gold)
  a +0 hunting sling (34 gold)
  a +0 hunting sling (34 gold)
  a +0 spear (69 gold)
  a +0 whip (57 gold)
  the +9 heavy crossbow "Sniper" {vorpal, Acc+∞ SInv} (1637 gold)
    Any bolt fired from it inflicts extra damage.
    
    It lets you see invisible.
  a +0 rapier (92 gold)
  a +0 long sword (80 gold)
  a +0 dagger (46 gold)
(0, 0, D:6)
  7 gold pieces
(5, -20, D:6)
  a +0 ring mail
(6, -22, D:6)
  a +0 dire flail (still there?)
  a +0 chain mail (still there?)
(6, -20, D:6)
  a water moccasin corpse
(6, -19, D:6)
  an orc corpse
(6, -12, D:6)
  a giant cockroach corpse
(9, -19, D:6)
  a +0 dagger
  a +0 robe
  a +0 flail
  a +0 flail
  an orc corpse
  a gnoll corpse
  an orc corpse
(10, -19, D:6)
  a +0 dagger (still there?)
  an orc corpse (still there?)
(11, -18, D:6)
  a quokka corpse

the Ecumenical Temple