How to flip Bottled storm in OSRS

Flipping Bottled storm on the Old School RuneScape Grand Exchange currently makes about -26,305 gp profit per item after the 2% GE tax: buy near 1,634,428 gp (the instant-sell price) and re-list near 1,640,941 gp (the instant-buy price).

• Buy at (instant-sell): 1,634,428 gp
• Sell at (instant-buy): 1,640,941 gp
• Margin after 2% tax: -26,305 gp (-1.61% ROI)
• Buy limit per 4 hours: 15
• 24h volume: 420 (moderately traded)
• Max profit per limit cycle: -394,575 gp on 24,516,420 gp of capital

The flip, step by step

1. Place a buy offer at or just above 1,634,428 gp (the current instant-sell price).
2. Wait for the fill. Bottled storm is moderately traded right now, so fills can take an hour or more, patience pays here.
3. Re-list at or just below 1,640,941 gp (the current instant-buy price).
4. The GE takes 32,818 gp tax (2%) per item when it sells, leaving -26,305 gp profit each.
5. Repeat up to the buy limit (15 per 4 hours), a full cycle is -394,575 gp on 24,516,420 gp of capital.

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