Banana

Banana is a free-to-play item on the OSRS Grand Exchange in the other category.

In-game examine text: "Mmm this looks tasty."

It has a Grand Exchange buy limit of 13,000 every four hours, a high alchemy value of 1 gp, and item ID 1963.

View on OSRS Wiki

Banana shows an active flip setup with a margin of +2 gp and 215,563 trades over the last 24 hours.

At the buy limit of 13,000 every four hours, max profit per cycle is about 26.0k gp — high margin with healthy liquidity.