Rune knife(p)

The Rune knife(p) is a members-only Old School RuneScape item — “A finely balanced throwing knife.”. Its Grand Exchange buy limit is 7,000 per 4 hours. Right now it buys at 123 gp and sells at 175 gp — a net margin of 49 gp (39.8% ROI) after the 2% Grand Exchange tax of 3 gp. High alchemy yields 99 gp.

To flip it, place a buy offer near 123 gp and a sell offer near 175 gp; the spread minus GE tax is your profit. Confidence figures are model estimates from live OSRS Wiki prices, not guarantees — flip responsibly.