How to flip Inquisitor's armour set in OSRS

Flipping Inquisitor's armour set on the Old School RuneScape Grand Exchange currently makes about -135,157 gp profit per item after the 2% GE tax: buy near 391,496,255 gp (the instant-sell price) and re-list near 396,361,098 gp (the instant-buy price).

• Buy at (instant-sell): 391,496,255 gp
• Sell at (instant-buy): 396,361,098 gp
• Margin after 2% tax: -135,157 gp (-0.03% ROI)
• 24h volume: 638 (moderately traded)

The flip, step by step

1. Place a buy offer at or just above 391,496,255 gp (the current instant-sell price).
2. Wait for the fill. Inquisitor's armour set is moderately traded right now, so fills can take an hour or more, patience pays here.
3. Re-list at or just below 396,361,098 gp (the current instant-buy price).
4. The GE takes 5,000,000 gp tax (2%) per item when it sells, leaving -135,157 gp profit each.
5. Repeat up to the buy limit.

Margins move constantly. Re-check the live Inquisitor's armour set numbers and price chart on GrandExchange.com right before committing.