Barrel of demonic tallow (full)

The Barrel of demonic tallow (full) is a members-only Old School RuneScape item — “Somebody's been avoiding their cardio...”. Its Grand Exchange buy limit is effectively unlimited. Right now it buys at 14,107 gp and sells at 15,030 gp — a net margin of 623 gp (4.4% ROI) after the 2% Grand Exchange tax of 300 gp. High alchemy yields 300 gp.

To flip it, place a buy offer near 14,107 gp and a sell offer near 15,030 gp; the spread minus GE tax is your profit. Confidence figures are model estimates from live OSRS Wiki prices, not guarantees — flip responsibly.