How to flip Crystal armour seed in OSRS

Flipping Crystal armour seed on the Old School RuneScape Grand Exchange currently makes about -53,523 gp profit per item after the 2% GE tax: buy near 5,290,643 gp (the instant-sell price) and re-list near 5,344,000 gp (the instant-buy price).

• Buy at (instant-sell): 5,290,643 gp
• Sell at (instant-buy): 5,344,000 gp
• Margin after 2% tax: -53,523 gp (-1.01% ROI)
• Buy limit per 4 hours: 100
• 24h volume: 3,039 (liquid)
• Max profit per limit cycle: -5,352,300 gp on 529,064,300 gp of capital

The flip, step by step

1. Place a buy offer at or just above 5,290,643 gp (the current instant-sell price).
2. Wait for the fill. Crystal armour seed is liquid right now, so expect fills within the hour at reasonable prices.
3. Re-list at or just below 5,344,000 gp (the current instant-buy price).
4. The GE takes 106,880 gp tax (2%) per item when it sells, leaving -53,523 gp profit each.
5. Repeat up to the buy limit (100 per 4 hours), a full cycle is -5,352,300 gp on 529,064,300 gp of capital.

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