How to flip Rune warhammer in OSRS

Flipping Rune warhammer on the Old School RuneScape Grand Exchange currently makes about -175 gp profit per item after the 2% GE tax: buy near 24,010 gp (the instant-sell price) and re-list near 24,321 gp (the instant-buy price).

• Buy at (instant-sell): 24,010 gp
• Sell at (instant-buy): 24,321 gp
• Margin after 2% tax: -175 gp (-0.73% ROI)
• Buy limit per 4 hours: 70
• 24h volume: 101,577 (extremely liquid)
• Max profit per limit cycle: -12,250 gp on 1,680,700 gp of capital

The flip, step by step

1. Place a buy offer at or just above 24,010 gp (the current instant-sell price).
2. Wait for the fill. Rune warhammer is extremely liquid right now, so offers at fair prices typically fill within minutes.
3. Re-list at or just below 24,321 gp (the current instant-buy price).
4. The GE takes 486 gp tax (2%) per item when it sells, leaving -175 gp profit each.
5. Repeat up to the buy limit (70 per 4 hours), a full cycle is -12,250 gp on 1,680,700 gp of capital.

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