How to flip Light ballista in OSRS

Flipping Light ballista on the Old School RuneScape Grand Exchange currently makes about 26,986 gp profit per item after the 2% GE tax: buy near 410,266 gp (the instant-sell price) and re-list near 446,175 gp (the instant-buy price).

• Buy at (instant-sell): 410,266 gp
• Sell at (instant-buy): 446,175 gp
• Margin after 2% tax: 26,986 gp (6.58% ROI)
• Buy limit per 4 hours: 8
• 24h volume: 286 (moderately traded)
• Max profit per limit cycle: 215,888 gp on 3,282,128 gp of capital

The flip, step by step

1. Place a buy offer at or just above 410,266 gp (the current instant-sell price).
2. Wait for the fill. Light ballista is moderately traded right now, so fills can take an hour or more, patience pays here.
3. Re-list at or just below 446,175 gp (the current instant-buy price).
4. The GE takes 8,923 gp tax (2%) per item when it sells, leaving 26,986 gp profit each.
5. Repeat up to the buy limit (8 per 4 hours), a full cycle is 215,888 gp on 3,282,128 gp of capital.

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