Combat potion(1)

The Combat potion(1) is a members-only Old School RuneScape item — “1 dose of combat potion.”. Its Grand Exchange buy limit is 2,000 per 4 hours. Right now it buys at 30 gp and sells at 72 gp — a net margin of 41 gp (136.7% ROI) after the 2% Grand Exchange tax of 1 gp. High alchemy yields 31 gp.

To flip it, place a buy offer near 30 gp and a sell offer near 72 gp; the spread minus GE tax is your profit. Confidence figures are model estimates from live OSRS Wiki prices, not guarantees — flip responsibly.