How to flip Mystic robe bottom (dark) in OSRS

Flipping Mystic robe bottom (dark) on the Old School RuneScape Grand Exchange currently makes about 1,600 gp profit per item after the 2% GE tax: buy near 47,301 gp (the instant-sell price) and re-list near 49,898 gp (the instant-buy price).

• Buy at (instant-sell): 47,301 gp
• Sell at (instant-buy): 49,898 gp
• Margin after 2% tax: 1,600 gp (3.38% ROI)
• Buy limit per 4 hours: 70
• 24h volume: 2,064 (liquid)
• Max profit per limit cycle: 112,000 gp on 3,311,070 gp of capital

The flip, step by step

1. Place a buy offer at or just above 47,301 gp (the current instant-sell price).
2. Wait for the fill. Mystic robe bottom (dark) is liquid right now, so expect fills within the hour at reasonable prices.
3. Re-list at or just below 49,898 gp (the current instant-buy price).
4. The GE takes 997 gp tax (2%) per item when it sells, leaving 1,600 gp profit each.
5. Repeat up to the buy limit (70 per 4 hours), a full cycle is 112,000 gp on 3,311,070 gp of capital.

Margins move constantly. Re-check the live Mystic robe bottom (dark) numbers and price chart on GrandExchange.com right before committing.