Potato cactus

Potato Cactus is a members-only item on the OSRS Grand Exchange in the other category.

In-game examine text: "How am I supposed to eat that?!"

It has a Grand Exchange buy limit of 11,000 every four hours, a high alchemy value of 1 gp, and item ID 3138.

View on OSRS Wiki

Potato Cactus shows an active flip setup with a margin of +11 gp and 358,329 trades over the last 24 hours.

At the buy limit of 11,000 every four hours, max profit per cycle is about 121.0k gp — high margin with healthy liquidity.