How to flip Eclipse Moon armour set in OSRS

Flipping Eclipse Moon armour set on the Old School RuneScape Grand Exchange currently makes about -56,570 gp profit per item after the 2% GE tax: buy near 5,300,000 gp (the instant-sell price) and re-list near 5,350,438 gp (the instant-buy price).

• Buy at (instant-sell): 5,300,000 gp
• Sell at (instant-buy): 5,350,438 gp
• Margin after 2% tax: -56,570 gp (-1.07% ROI)
• Buy limit per 4 hours: 2
• 24h volume: 495 (moderately traded)
• Max profit per limit cycle: -113,140 gp on 10,600,000 gp of capital

The flip, step by step

1. Place a buy offer at or just above 5,300,000 gp (the current instant-sell price).
2. Wait for the fill. Eclipse Moon 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 5,350,438 gp (the current instant-buy price).
4. The GE takes 107,008 gp tax (2%) per item when it sells, leaving -56,570 gp profit each.
5. Repeat up to the buy limit (2 per 4 hours), a full cycle is -113,140 gp on 10,600,000 gp of capital.

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