Weapon poison(++)

The Weapon poison(++) is a members-only Old School RuneScape item — “A vial of super strong weapon poison, for spears and daggers.”. Its Grand Exchange buy limit is 2,000 per 4 hours. Right now it buys at 3,300 gp and sells at 3,474 gp — a net margin of 105 gp (3.2% ROI) after the 2% Grand Exchange tax of 69 gp. High alchemy yields 259 gp.

To flip it, place a buy offer near 3,300 gp and a sell offer near 3,474 gp; the spread minus GE tax is your profit. Confidence figures are model estimates from live OSRS Wiki prices, not guarantees — flip responsibly.