Rune knife(p++)

Rune Knife(p++) is a members-only item on the OSRS Grand Exchange in the runes category.

In-game examine text: "A finely balanced throwing knife."

It has a Grand Exchange buy limit of 7,000 every four hours, a high alchemy value of 99 gp, and item ID 5667.

View on OSRS Wiki

Rune Knife(p++) shows an active flip setup with a margin of +64 gp and 99,232 trades over the last 24 hours.

At the buy limit of 7,000 every four hours, max profit per cycle is about 448.0k gp — high margin with healthy liquidity.