|1,838,700 per hour|
475 x Air orbs (2769725)
Air orbs are worth 5,831 coins, and are created by casting Charge Air Orb on unpowered orbs at the Air Obelisk. With an equipped air staff, this requires 3 cosmic runes per cast (or 1,236 coins). Using the Edgeville lodestone for banking, you can charge 27 orbs per trip (one inventory slot is needed for the cosmic runes), resulting in a profit of 104,517 coins per trip. You can also use a beast of burden to carry more orbs, but remember to leave 3 or 4 free spaces in your inventory, so you can swap between unpowered and charged orbs.
The Air Obelisk is located on an island in the Wilderness accessible via the Edgeville dungeon, or via the shortcut from the Wilderness with completion of the Wilderness hard tasks. Using the map on the right as a guide through the dungeon, the round trip to the obelisk, counting banking, takes approximately 205 seconds.
Bear in mind that running through the Edgeville dungeon places you in combat range of aggressive thugs, chaos druids, deadly red spiders, level 84 skeletons and black demons. The Air Obelisk is also located in the Wilderness, so do not take anything you are not prepared to lose.
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