How to flip Loop half of key in OSRS

Flipping Loop half of key on the Old School RuneScape Grand Exchange currently makes about 237 gp profit per item after the 2% GE tax: buy near 8,250 gp (the instant-sell price) and re-list near 8,660 gp (the instant-buy price).

• Buy at (instant-sell): 8,250 gp
• Sell at (instant-buy): 8,660 gp
• Margin after 2% tax: 237 gp (2.87% ROI)
• Buy limit per 4 hours: 11,000
• 24h volume: 12,579 (very liquid)
• Max profit per limit cycle: 2,607,000 gp on 90,750,000 gp of capital

The flip, step by step

1. Place a buy offer at or just above 8,250 gp (the current instant-sell price).
2. Wait for the fill. Loop half of key is very liquid right now, so offers usually fill within minutes to a quarter hour.
3. Re-list at or just below 8,660 gp (the current instant-buy price).
4. The GE takes 173 gp tax (2%) per item when it sells, leaving 237 gp profit each.
5. Repeat up to the buy limit (11,000 per 4 hours), a full cycle is 2,607,000 gp on 90,750,000 gp of capital.

Margins move constantly. Re-check the live Loop half of key numbers and price chart on GrandExchange.com right before committing.