Saltpetre
A power that can be added to compost to make fertiliser.
Saltpetre is a members-only item on the OSRS Grand Exchange. Recent trades put the high price at 3 GP (21m ago) and the low price at 2 GP (2m ago). Buying at the low price and selling at the high price would leave 1 GP per item after the 2% tax (50.00% of the buy price). You can buy up to 13,000 every four hours. High Alchemy would lose 165 GP per cast if you bought it at the low price and paid for the nature rune. 1,838,652 were traded in the last 24 hours.
| High | 3 GP () |
|---|---|
| Low | 2 GP () |
| Tax | 0 GP |
| Margin | 1 GP |
| ROI | 50.00% |
| Buy limit | 13,000 every 4 hours |
| High alchemy | 3 GP |
Buy price (insta-sell / low): 2 GP
Sell price (insta-buy / high): 3 GP
Margin after tax: 1 GP per unit. No Grand Exchange tax applies at this price.
Buy limit: 13,000 every 4 hours.
The full buy limit of 13,000 Saltpetre costs 26,000 GP at the current buy price. Across that quantity, the after-tax margin is 13,000 GP.
- Grand Exchange buy limit: 13,000 every 4 hours
- Members-only item
- High alchemy value: 3 GP
- Low alchemy value: 2 GP
- Base value: 5 GP
Saltpetre price history
- Over the past 7 days, the average high ranged from 1 GP to 3 GP across 84 hourly samples. From 2026-11-01 UTC to 2026-11-08 UTC, it moved from 2 GP to 3 GP (+1 GP, +50.00%).
- Over the past 30 days, the average high ranged from 1 GP to 5 GP across 178 hourly samples. From 2026-10-09 UTC to 2026-11-08 UTC, it moved from 3 GP to 3 GP (0 GP, 0.00%).
- Over the past 90 days, the average high ranged from 1 GP to 7 GP across 691 hourly samples. From 2026-08-10 UTC to 2026-11-08 UTC, it moved from 5 GP to 3 GP (-2 GP, -40.00%).
- Over the past 90 days, the highest average high was 7 GP on 2026-09-26 UTC, and the lowest was 1 GP on 2026-11-04 UTC.
As of 2026-11-08 UTC. See this week's market summary.
To cite this page: QuantScapers, "Saltpetre 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 Saltpetre?
You can buy up to 13,000 Saltpetre every 4 hours on the Grand Exchange.
Is Saltpetre a members-only item?
Saltpetre is a members-only item and requires OSRS membership to trade.
What is Saltpetre's current buy and sell price?
At the latest update, Saltpetre's insta-sell (low) price is 2 GP and its insta-buy (high) price is 3 GP on the Grand Exchange.
How much Grand Exchange tax applies to Saltpetre?
Saltpetre trades below 50 GP at the current quote, so no Grand Exchange tax applies.
What does a full buy limit of Saltpetre cost?
Buying the full limit of 13,000 Saltpetre costs 26,000 GP at the current insta-sell price of 2 GP each.