How to flip Saturated heart in OSRS

Flipping Saturated heart on the Old School RuneScape Grand Exchange currently makes about -634,560 gp profit per item after the 2% GE tax: buy near 66,000,000 gp (the instant-sell price) and re-list near 66,699,428 gp (the instant-buy price).

• Buy at (instant-sell): 66,000,000 gp
• Sell at (instant-buy): 66,699,428 gp
• Margin after 2% tax: -634,560 gp (-0.96% ROI)
• Buy limit per 4 hours: 8
• 24h volume: 818 (moderately traded)
• Max profit per limit cycle: -5,076,480 gp on 528,000,000 gp of capital

The flip, step by step

1. Place a buy offer at or just above 66,000,000 gp (the current instant-sell price).
2. Wait for the fill. Saturated heart is moderately traded right now, so fills can take an hour or more, patience pays here.
3. Re-list at or just below 66,699,428 gp (the current instant-buy price).
4. The GE takes 1,333,988 gp tax (2%) per item when it sells, leaving -634,560 gp profit each.
5. Repeat up to the buy limit (8 per 4 hours), a full cycle is -5,076,480 gp on 528,000,000 gp of capital.

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