Efficiency

Level 5 of the Dungeon
(0, 0, D:5)
  16 gold pieces
(4, -1, D:5)
  14 gold pieces
(8, 0, D:5)
  8 gold pieces
(16, -10, D:5)
  a +0 plate armour
(24, -9, D:5)
  a scroll of identify

Level 6 of the Dungeon
(0, 0, D:6)
  20 stones
(6, -1, D:6)
  12 gold pieces
(7, -18, D:6)
  8 gold pieces

Level 7 of the Dungeon
(0, 0, D:7)
  a scroll of identify
(2, 0, D:7)
  a potion of resistance