Making Extended super antifire(4) (Extended antifire(4), Crushed superior dragon bones)

Making Extended super antifire(4) (Extended antifire(4), Crushed superior dragon bones) in OSRS: 1 × Extended antifire(4), 1 × Crushed superior dragon bones → 1 × Extended super antifire(4). Profit right now: -940 gp after GE tax (input cost 19,605 gp).