How to flip Rune halberd in OSRS

Flipping Rune halberd on the Old School RuneScape Grand Exchange currently makes about -823 gp profit per item after the 2% GE tax: buy near 37,573 gp (the instant-sell price) and re-list near 37,499 gp (the instant-buy price).

• Buy at (instant-sell): 37,573 gp
• Sell at (instant-buy): 37,499 gp
• Margin after 2% tax: -823 gp (-2.19% ROI)
• Buy limit per 4 hours: 70
• 24h volume: 7,959 (liquid)
• Max profit per limit cycle: -57,610 gp on 2,630,110 gp of capital

The flip, step by step

1. Place a buy offer at or just above 37,573 gp (the current instant-sell price).
2. Wait for the fill. Rune halberd is liquid right now, so expect fills within the hour at reasonable prices.
3. Re-list at or just below 37,499 gp (the current instant-buy price).
4. The GE takes 749 gp tax (2%) per item when it sells, leaving -823 gp profit each.
5. Repeat up to the buy limit (70 per 4 hours), a full cycle is -57,610 gp on 2,630,110 gp of capital.

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