How to flip Aldarium in OSRS

Flipping Aldarium on the Old School RuneScape Grand Exchange currently makes about -489 gp profit per item after the 2% GE tax: buy near 53,409 gp (the instant-sell price) and re-list near 54,000 gp (the instant-buy price).

• Buy at (instant-sell): 53,409 gp
• Sell at (instant-buy): 54,000 gp
• Margin after 2% tax: -489 gp (-0.92% ROI)
• Buy limit per 4 hours: 13,000
• 24h volume: 62,449 (very liquid)
• Max profit per limit cycle: -6,357,000 gp on 694,317,000 gp of capital

The flip, step by step

1. Place a buy offer at or just above 53,409 gp (the current instant-sell price).
2. Wait for the fill. Aldarium is very liquid right now, so offers usually fill within minutes to a quarter hour.
3. Re-list at or just below 54,000 gp (the current instant-buy price).
4. The GE takes 1,080 gp tax (2%) per item when it sells, leaving -489 gp profit each.
5. Repeat up to the buy limit (13,000 per 4 hours), a full cycle is -6,357,000 gp on 694,317,000 gp of capital.

Margins move constantly. Re-check the live Aldarium numbers and price chart on GrandExchange.com right before committing.