How to flip Tome of Fire (empty) in OSRS

Flipping Tome of Fire (empty) on the Old School RuneScape Grand Exchange currently makes about 15,803 gp profit per item after the 2% GE tax: buy near 1,086,931 gp (the instant-sell price) and re-list near 1,125,238 gp (the instant-buy price).

• Buy at (instant-sell): 1,086,931 gp
• Sell at (instant-buy): 1,125,238 gp
• Margin after 2% tax: 15,803 gp (1.45% ROI)
• Buy limit per 4 hours: 15
• 24h volume: 1,926 (liquid)
• Max profit per limit cycle: 237,045 gp on 16,303,965 gp of capital

The flip, step by step

1. Place a buy offer at or just above 1,086,931 gp (the current instant-sell price).
2. Wait for the fill. Tome of Fire (empty) is liquid right now, so expect fills within the hour at reasonable prices.
3. Re-list at or just below 1,125,238 gp (the current instant-buy price).
4. The GE takes 22,504 gp tax (2%) per item when it sells, leaving 15,803 gp profit each.
5. Repeat up to the buy limit (15 per 4 hours), a full cycle is 237,045 gp on 16,303,965 gp of capital.

Margins move constantly. Re-check the live Tome of Fire (empty) numbers and price chart on GrandExchange.com right before committing.