Big bones

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

In-game examine text: "Ew it's a pile of bones."

It has a Grand Exchange buy limit of 3,000 every four hours, a high alchemy value of 1 gp, and item ID 532.

View on OSRS Wiki

Big Bones currently has a flip margin of −3 gp, which isn't profitable to flip right now despite 344,644 trades over the last 24 hours.

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