Caviar

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

In-game examine text: "Caviar, or expensive fishy eggs."

It has a Grand Exchange buy limit of 13,000 every four hours, a high alchemy value of 30 gp, and item ID 11326.

View on OSRS Wiki

Caviar shows an active flip setup with a margin of +6 gp and 67,091 trades over the last 24 hours.

At the buy limit of 13,000 every four hours, max profit per cycle is about 78.0k gp — high margin with healthy liquidity.