Iron cannonball

Ammo suited for a boat's cannon. Iron cannonball is a members-only item traded on the Old School RuneScape Grand Exchange.

At just 13 gp, Iron cannonball is among the lowest-priced tradeable items — volume is everything at this price point.

With 21,724 recent trades, Iron cannonball dominates GE volume charts — offers fill almost instantly at any time of day. With a buy limit of 11,000 every 4 hours, you can trade in large quantities per session. At the current margin, flipping the full buy limit yields up to 11,000 gp profit every 4 hours.

Iron cannonball currently has a positive margin of 1 gp after the GE tax, resulting in an ROI of 7.7%. At 6/10, Iron cannonball sits in the middle of the pack — worth flipping if you have capital to spare but not a top-priority target. The price has dropped 13.3% in the last hour, which could signal a buying opportunity if the margin improves.

Iron cannonball has a high alchemy value of 2 gp, but at the current buy price it is not profitable to alch.

The price has dropped sharply — down 13.3% in the last hour. This could signal a sell-off or increased supply; it may be worth waiting for the price to stabilise before entering a flip.

With a tight spread, instant buy-and-sell is a viable approach for Iron cannonball. Undercutting the instant buy by a small amount (1 GP to a few hundred GP) is usually enough to get priority in the queue. High trading volume means offers tend to fill quickly, making this suitable for active flipping sessions where you want fast turnover.

Track margins and find profitable trades with the Flip Finder. Use the High Alch Calculator to check whether this item is worth alching as an alternative exit strategy.

Use the flip calculator above to estimate your profit based on quantity. Set a price alert to get notified when the margin changes, or add this item to your watchlist for quick access.