Catalytic tiara

The Catalytic tiara is a members-only Old School RuneScape item — “A tiara infused with the properties of every catalytic rune.”. Its Grand Exchange buy limit is 40 per 4 hours. Right now it buys at 49 gp and sells at 56 gp — a net margin of 6 gp (12.2% ROI) after the 2% Grand Exchange tax of 1 gp. High alchemy yields 60 gp.

To flip it, place a buy offer near 49 gp and a sell offer near 56 gp; the spread minus GE tax is your profit. Confidence figures are model estimates from live OSRS Wiki prices, not guarantees — flip responsibly.