How to flip Armadyl helmet in OSRS

Flipping Armadyl helmet on the Old School RuneScape Grand Exchange currently makes about -13,051 gp profit per item after the 2% GE tax: buy near 9,800,000 gp (the instant-sell price) and re-list near 9,986,682 gp (the instant-buy price).

• Buy at (instant-sell): 9,800,000 gp
• Sell at (instant-buy): 9,986,682 gp
• Margin after 2% tax: -13,051 gp (-0.13% ROI)
• Buy limit per 4 hours: 8
• 24h volume: 379 (moderately traded)
• Max profit per limit cycle: -104,408 gp on 78,400,000 gp of capital

The flip, step by step

1. Place a buy offer at or just above 9,800,000 gp (the current instant-sell price).
2. Wait for the fill. Armadyl helmet is moderately traded right now, so fills can take an hour or more, patience pays here.
3. Re-list at or just below 9,986,682 gp (the current instant-buy price).
4. The GE takes 199,733 gp tax (2%) per item when it sells, leaving -13,051 gp profit each.
5. Repeat up to the buy limit (8 per 4 hours), a full cycle is -104,408 gp on 78,400,000 gp of capital.

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