Mithril incendiary cannonball trades around 1,070 gp now, +23.4% this week, 7-day range 677–1,447.
Flippers place a buy offer near the low and sell near the high.
“Ammo suited for a boat's cannon.”
Mithril incendiary cannonball last traded at 1,447 gp (insta-buy) and 693 gp (insta-sell) on the Grand Exchange. After the GE tax on a sale, that leaves a margin of 726 gp per item. 5,682 were traded in the last 24 hours. It is a members' item.
Hourly mid price, the average of the buy and sell prices. Volume counts both sides.
Daily GE guide prices from 22 May 2026 to 11 Oct 2026, from the OSRS Wiki. Data as of 11 Oct 2026.
Tax: Selling one at 1,447 gp costs 28 gp in tax (2% of the sale price, rounded down, capped at 5m gp). Tax-exempt items →
Mithril incendiary cannonball last sold for 693 gp (instant sell) and was last bought for 1,447 gp (instant buy) on the Grand Exchange.
The OSRS Wiki has no recorded buy limit for Mithril incendiary cannonball yet, so Offerbook sizes flips on it by trade volume alone.
High alchemy turns Mithril incendiary cannonball into 72 gp. Buying one at 1,447 gp and casting with a nature rune at 137 gp costs 1,584 gp. That is a loss of 1,512 gp per cast at the latest prices, so it is not worth alching for profit right now.
No. Selling one at 1,447 gp costs 28 gp in tax (2% of the sale price, rounded down, capped at 5m gp).
The highest daily guide price on record for Mithril incendiary cannonball is 693 gp, on 5 Oct 2026. The lowest is 511 gp, on 3 Jun 2026.