How to flip Cannon furnace in OSRS

Flipping Cannon furnace on the Old School RuneScape Grand Exchange currently makes about 21,359 gp profit per item after the 2% GE tax: buy near 175,727 gp (the instant-sell price) and re-list near 201,108 gp (the instant-buy price).

• Buy at (instant-sell): 175,727 gp
• Sell at (instant-buy): 201,108 gp
• Margin after 2% tax: 21,359 gp (12.15% ROI)
• Buy limit per 4 hours: 70
• 24h volume: 453 (moderately traded)
• Max profit per limit cycle: 1,495,130 gp on 12,300,890 gp of capital

The flip, step by step

1. Place a buy offer at or just above 175,727 gp (the current instant-sell price).
2. Wait for the fill. Cannon furnace is moderately traded right now, so fills can take an hour or more, patience pays here.
3. Re-list at or just below 201,108 gp (the current instant-buy price).
4. The GE takes 4,022 gp tax (2%) per item when it sells, leaving 21,359 gp profit each.
5. Repeat up to the buy limit (70 per 4 hours), a full cycle is 1,495,130 gp on 12,300,890 gp of capital.

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