Steel locks

The Steel locks is a members-only Old School RuneScape item — “Perhaps someone can do something with this.”. Its Grand Exchange buy limit is 8 per 4 hours. Right now it buys at 250 gp and sells at 740 gp — a net margin of 476 gp (190.4% ROI) after the 2% Grand Exchange tax of 14 gp. High alchemy yields 960 gp.

To flip it, place a buy offer near 250 gp and a sell offer near 740 gp; the spread minus GE tax is your profit. Confidence figures are model estimates from live OSRS Wiki prices, not guarantees — flip responsibly.