Rune spear

Rune Spear is a members-only item on the OSRS Grand Exchange in the weapons category.

In-game examine text: "A rune tipped spear."

It has a Grand Exchange buy limit of 70 every four hours, a high alchemy value of 12.5k gp, and item ID 1247.

View on OSRS Wiki

Rune Spear shows an active flip setup with a margin of +1.1k gp and 6,526 trades over the last 24 hours.

At the buy limit of 70 every four hours, max profit per cycle is about 77.5k gp — high margin with healthy liquidity.