Waterskin(0)

Waterskin(0) is a members-only item on the OSRS Grand Exchange in the other category.

In-game examine text: "A completely empty waterskin - you'll need to fill it up."

It has a Grand Exchange buy limit of 10,000 every four hours, a high alchemy value of 9 gp, and item ID 1831.

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Waterskin(0) shows an active flip setup with a margin of +8 gp and 6,763 trades over the last 24 hours.

At the buy limit of 10,000 every four hours, max profit per cycle is about 80.0k gp — high margin with healthy liquidity.