Sawmill voucher

Sawmill Voucher is a members-only item on the OSRS Grand Exchange in the other category.

In-game examine text: "Used to provide additional planks at the sawmill."

It has a Grand Exchange buy limit of 10,000 every four hours, a high alchemy value of 60 gp, and item ID 28628.

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Sawmill Voucher shows an active flip setup with a margin of +64 gp and 540,395 trades over the last 24 hours.

At the buy limit of 10,000 every four hours, max profit per cycle is about 640.0k gp — high margin with healthy liquidity.