How to flip Spider carcass in OSRS

Flipping Spider carcass on the Old School RuneScape Grand Exchange currently makes about 183 gp profit per item after the 2% GE tax: buy near 103 gp (the instant-sell price) and re-list near 291 gp (the instant-buy price).

• Buy at (instant-sell): 103 gp
• Sell at (instant-buy): 291 gp
• Margin after 2% tax: 183 gp (177.67% ROI)
• Buy limit per 4 hours: 13,000
• 24h volume: 3,174 (liquid)
• Max profit per limit cycle: 2,379,000 gp on 1,339,000 gp of capital

The flip, step by step

1. Place a buy offer at or just above 103 gp (the current instant-sell price).
2. Wait for the fill. Spider carcass is liquid right now, so expect fills within the hour at reasonable prices.
3. Re-list at or just below 291 gp (the current instant-buy price).
4. The GE takes 5 gp tax (2%) per item when it sells, leaving 183 gp profit each.
5. Repeat up to the buy limit (13,000 per 4 hours), a full cycle is 2,379,000 gp on 1,339,000 gp of capital.

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