Zamorak brew(2)

The Zamorak brew(2) is a members-only Old School RuneScape item — “2 doses of Zamorak brew.”. Its Grand Exchange buy limit is 2,000 per 4 hours. Right now it buys at 225 gp and sells at 443 gp — a net margin of 210 gp (93.3% ROI) after the 2% Grand Exchange tax of 8 gp. High alchemy yields 90 gp.

To flip it, place a buy offer near 225 gp and a sell offer near 443 gp; the spread minus GE tax is your profit. Confidence figures are model estimates from live OSRS Wiki prices, not guarantees — flip responsibly.