Harpoon

Useful for catching really big fish. Harpoon is a free-to-play item traded on the Old School RuneScape Grand Exchange.

At just 1,209 gp, Harpoon is a low-cost item that can be flipped with minimal starting capital. The buy-sell spread is 839 gp (69.4%), which indicates a wide gap between instant buy and sell — typical of less liquid items.

Harpoon has very low trading volume (3 recent trades), which means wider spreads and slower fills. The buy limit of 40 every 4 hours is worth planning around when scaling flips.

Harpoon currently has a negative margin of -842 gp after tax, meaning instant flips would result in a loss at these prices. Margins fluctuate throughout the day — check back later or set a price alert to be notified when the margin turns positive. The price has dropped 71.5% in the last hour, which could signal a buying opportunity if the margin improves.

Harpoon has a high alchemy value of 3 gp, but at the current buy price it is not profitable to alch.

Set a price alert to get notified when the margin changes, or add this item to your watchlist for quick access.