Giant seaweed
Seaweed of large size.
Giant seaweed is a members-only item on the OSRS Grand Exchange. The latest high price is 32 GP (1h ago) and the low price is 22 GP (3m ago). Buying at the low price and selling at the high price would leave 10 GP per item after the 2% tax (45.45% of the buy price). You can buy up to 11,000 every four hours. Buying one at the low price and casting High Alchemy with a nature rune would lose 185 GP. 316,319 were traded in the last 24 hours.
| High | 32 GP () |
|---|---|
| Low | 22 GP () |
| Tax | 0 GP |
| Margin | 10 GP |
| ROI | 45.45% |
| Buy limit | 11,000 every 4 hours |
| High alchemy | 1 GP |
Buy price (insta-sell / low): 22 GP
Sell price (insta-buy / high): 32 GP
Margin after tax: 10 GP per unit. No Grand Exchange tax applies at this price.
Buy limit: 11,000 every 4 hours.
The full buy limit of 11,000 Giant seaweed costs 242,000 GP at the current buy price. Across that quantity, the after-tax margin is 110,000 GP.
- Grand Exchange buy limit: 11,000 every 4 hours
- Members-only item
- High alchemy value: 1 GP
- Low alchemy value: 1 GP
- Base value: 2 GP
Giant seaweed price history
- Over the past 7 days, the average high ranged from 15 GP to 50 GP across 38 hourly samples. From 2026-11-01 UTC to 2026-11-08 UTC, it moved from 50 GP to 31 GP (-19 GP, -38.00%).
- Over the past 30 days, the average high ranged from 15 GP to 85 GP across 105 hourly samples. From 2026-10-10 UTC to 2026-11-08 UTC, it moved from 68 GP to 31 GP (-37 GP, -54.41%).
- Over the past 90 days, the average high ranged from 15 GP to 110 GP across 392 hourly samples. From 2026-08-10 UTC to 2026-11-08 UTC, it moved from 81 GP to 31 GP (-50 GP, -61.73%).
- Over the past 90 days, the highest average high was 110 GP on 2026-09-27 UTC, and the lowest was 15 GP on 2026-11-05 UTC.
As of 2026-11-08 UTC. See this week's market summary.
To cite this page: QuantScapers, "Giant seaweed price history", based on OSRS Wiki real-time price data through 2026-11-08 UTC. Calculations by QuantScapers.
What is the Grand Exchange buy limit for Giant seaweed?
You can buy up to 11,000 Giant seaweed every 4 hours on the Grand Exchange.
Is Giant seaweed a members-only item?
Giant seaweed is a members-only item and requires OSRS membership to trade.
What is Giant seaweed's current buy and sell price?
At the latest update, Giant seaweed's insta-sell (low) price is 22 GP and its insta-buy (high) price is 32 GP on the Grand Exchange.
How much Grand Exchange tax applies to Giant seaweed?
Giant seaweed trades below 50 GP at the current quote, so no Grand Exchange tax applies.
What does a full buy limit of Giant seaweed cost?
Buying the full limit of 11,000 Giant seaweed costs 242,000 GP at the current insta-sell price of 22 GP each.