How to flip Blood Moon helm in OSRS

Flipping Blood Moon helm on the Old School RuneScape Grand Exchange currently makes about -1,297 gp profit per item after the 2% GE tax: buy near 823,223 gp (the instant-sell price) and re-list near 838,700 gp (the instant-buy price).

• Buy at (instant-sell): 823,223 gp
• Sell at (instant-buy): 838,700 gp
• Margin after 2% tax: -1,297 gp (-0.16% ROI)
• Buy limit per 4 hours: 15
• 24h volume: 522 (moderately traded)
• Max profit per limit cycle: -19,455 gp on 12,348,345 gp of capital

The flip, step by step

1. Place a buy offer at or just above 823,223 gp (the current instant-sell price).
2. Wait for the fill. Blood Moon helm is moderately traded right now, so fills can take an hour or more, patience pays here.
3. Re-list at or just below 838,700 gp (the current instant-buy price).
4. The GE takes 16,774 gp tax (2%) per item when it sells, leaving -1,297 gp profit each.
5. Repeat up to the buy limit (15 per 4 hours), a full cycle is -19,455 gp on 12,348,345 gp of capital.

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