Heavy ballista

Heavy Ballista is a members-only item on the OSRS Grand Exchange in the other category.

In-game examine text: "A powerful weapon forged from the wreckage of an airship."

It has a Grand Exchange buy limit of 8 every four hours, a high alchemy value of 570.0k gp, and item ID 19481.

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Heavy Ballista shows an active flip setup with a margin of +4.9k gp and 1,461 trades over the last 24 hours.

At the buy limit of 8 every four hours, max profit per cycle is about 39.3k gp — high margin with healthy liquidity.