Making Blue dragon leather (Tan Leather spell)

Making Blue dragon leather (Tan Leather spell) in OSRS: 5 × Blue dragonhide, 1 × Nature rune, 2 × Astral rune, 5 × Fire rune → 5 × Blue dragon leather. Profit right now: +1,409 gp after GE tax (input cost 8,121 gp).