Iron dagger

Iron Dagger is a free-to-play item on the OSRS Grand Exchange in the weapons category.

In-game examine text: "Short but pointy."

It has a Grand Exchange buy limit of 125 every four hours, a high alchemy value of 21 gp, and item ID 1203.

View on OSRS Wiki

Iron Dagger shows an active flip setup with a margin of +43 gp and 4,970 trades over the last 24 hours.

At the buy limit of 125 every four hours, max profit per cycle is about 5.4k gp — high margin with healthy liquidity.