Making Oak plank (Plank Make + Sawmill voucher)

Making Oak plank (Plank Make + Sawmill voucher) in OSRS: 1 × Oak logs, 1 × Nature rune, 2 × Astral rune, 15 × Earth rune, 1 × Sawmill voucher + 175 coins → 2 × Oak plank. Profit right now: -2,806 gp after GE tax (input cost 3,616 gp).