Black skirt

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

In-game examine text: "Clothing favoured by women and dark wizards."

It has a Grand Exchange buy limit of 150 every four hours, a high alchemy value of 1 gp, and item ID 1015.

View on OSRS Wiki

Black Skirt shows an active flip setup with a margin of +6 gp and 3,089 trades over the last 24 hours.

At the buy limit of 150 every four hours, max profit per cycle is about 900 gp — high margin with healthy liquidity.