Bass

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

In-game examine text: "Wow, this is a big fish."

It has a Grand Exchange buy limit of 6,000 every four hours, a high alchemy value of 24 gp, and item ID 365.

View on OSRS Wiki

Bass shows an active flip setup with a margin of +1 gp and 234,976 trades over the last 24 hours.

At the buy limit of 6,000 every four hours, max profit per cycle is about 6.0k gp — high margin with healthy liquidity.