How to flip Mushroom in OSRS

Flipping Mushroom on the Old School RuneScape Grand Exchange currently makes about 1 gp profit per item after the 2% GE tax: buy near 185 gp (the instant-sell price) and re-list near 189 gp (the instant-buy price).

• Buy at (instant-sell): 185 gp
• Sell at (instant-buy): 189 gp
• Margin after 2% tax: 1 gp (0.54% ROI)
• Buy limit per 4 hours: 11,000
• 24h volume: 35,198 (very liquid)
• Max profit per limit cycle: 11,000 gp on 2,035,000 gp of capital

The flip, step by step

1. Place a buy offer at or just above 185 gp (the current instant-sell price).
2. Wait for the fill. Mushroom is very liquid right now, so offers usually fill within minutes to a quarter hour.
3. Re-list at or just below 189 gp (the current instant-buy price).
4. The GE takes 3 gp tax (2%) per item when it sells, leaving 1 gp profit each.
5. Repeat up to the buy limit (11,000 per 4 hours), a full cycle is 11,000 gp on 2,035,000 gp of capital.

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