Compost

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

In-game examine text: "Good for plants, helps them grow."

It has a Grand Exchange buy limit of 2,000 every four hours, a high alchemy value of 12 gp, and item ID 6032.

View on OSRS Wiki

Compost currently has a flip margin of +0 gp, which isn't profitable to flip right now despite 56,104 trades over the last 24 hours.

Items with negative or zero margins like this are better watched than actively flipped until the spread widens.