How to flip Mithril arrowtips in OSRS

Flipping Mithril arrowtips on the Old School RuneScape Grand Exchange currently makes about 4 gp profit per item after the 2% GE tax: buy near 46 gp (the instant-sell price) and re-list near 51 gp (the instant-buy price).

• Buy at (instant-sell): 46 gp
• Sell at (instant-buy): 51 gp
• Margin after 2% tax: 4 gp (8.70% ROI)
• Buy limit per 4 hours: 10,000
• 24h volume: 882,865 (extremely liquid)
• Max profit per limit cycle: 40,000 gp on 460,000 gp of capital

The flip, step by step

1. Place a buy offer at or just above 46 gp (the current instant-sell price).
2. Wait for the fill. Mithril arrowtips is extremely liquid right now, so offers at fair prices typically fill within minutes.
3. Re-list at or just below 51 gp (the current instant-buy price).
4. The GE takes 1 gp tax (2%) per item when it sells, leaving 4 gp profit each.
5. Repeat up to the buy limit (10,000 per 4 hours), a full cycle is 40,000 gp on 460,000 gp of capital.

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