How to flip Contract of Familiar Acquisition in OSRS

Flipping Contract of Familiar Acquisition on the Old School RuneScape Grand Exchange currently makes about -3,054 gp profit per item after the 2% GE tax: buy near 125,993 gp (the instant-sell price) and re-list near 125,447 gp (the instant-buy price).

• Buy at (instant-sell): 125,993 gp
• Sell at (instant-buy): 125,447 gp
• Margin after 2% tax: -3,054 gp (-2.42% ROI)
• Buy limit per 4 hours: 50
• 24h volume: 415 (moderately traded)
• Max profit per limit cycle: -152,700 gp on 6,299,650 gp of capital

The flip, step by step

1. Place a buy offer at or just above 125,993 gp (the current instant-sell price).
2. Wait for the fill. Contract of Familiar Acquisition is moderately traded right now, so fills can take an hour or more, patience pays here.
3. Re-list at or just below 125,447 gp (the current instant-buy price).
4. The GE takes 2,508 gp tax (2%) per item when it sells, leaving -3,054 gp profit each.
5. Repeat up to the buy limit (50 per 4 hours), a full cycle is -152,700 gp on 6,299,650 gp of capital.

Margins move constantly. Re-check the live Contract of Familiar Acquisition numbers and price chart on GrandExchange.com right before committing.