How to flip Echo crystal in OSRS

Flipping Echo crystal on the Old School RuneScape Grand Exchange currently makes about 15,345 gp profit per item after the 2% GE tax: buy near 1,462,312 gp (the instant-sell price) and re-list near 1,507,813 gp (the instant-buy price).

• Buy at (instant-sell): 1,462,312 gp
• Sell at (instant-buy): 1,507,813 gp
• Margin after 2% tax: 15,345 gp (1.05% ROI)
• Buy limit per 4 hours: 8
• 24h volume: 605 (moderately traded)
• Max profit per limit cycle: 122,760 gp on 11,698,496 gp of capital

The flip, step by step

1. Place a buy offer at or just above 1,462,312 gp (the current instant-sell price).
2. Wait for the fill. Echo crystal is moderately traded right now, so fills can take an hour or more, patience pays here.
3. Re-list at or just below 1,507,813 gp (the current instant-buy price).
4. The GE takes 30,156 gp tax (2%) per item when it sells, leaving 15,345 gp profit each.
5. Repeat up to the buy limit (8 per 4 hours), a full cycle is 122,760 gp on 11,698,496 gp of capital.

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