Black knife(p)
A finely balanced throwing knife.
Black knife(p) is a members-only item on the OSRS Grand Exchange. Recent trades put the high price at 285 GP (5d ago) and the low price at 68,000 GP (36d ago). Buying at the low price and selling at the high price would lose 67,720 GP per item after the 2% tax (-99.59% of the buy price). You can buy up to 7,000 every four hours. High Alchemy would lose 68,156 GP per cast if you bought it at the low price and paid for the nature rune.
| High | 285 GP () |
|---|---|
| Low | 68,000 GP () |
| Tax | 5 GP |
| Margin | -67,720 GP |
| ROI | -99.59% |
| Buy limit | 7,000 every 4 hours |
| High alchemy | 10 GP |
Buy price (insta-sell / low): 68,000 GP
Sell price (insta-buy / high): 285 GP
Margin after tax: -67,720 GP per unit. Grand Exchange tax on a sale is 5 GP.
Buy limit: 7,000 every 4 hours.
The full buy limit of 7,000 Black knife(p) costs 476,000,000 GP at the current buy price. Across that quantity, the after-tax margin is -474,040,000 GP.
- Grand Exchange buy limit: 7,000 every 4 hours
- Members-only item
- High alchemy value: 10 GP
- Low alchemy value: 7 GP
- Base value: 18 GP
Black knife(p) price history
- Over the past 90 days, the average high ranged from 81 GP to 20,001 GP across 5 hourly samples. From 2026-08-11 UTC to 2026-11-02 UTC, it moved from 192 GP to 144 GP (-48 GP, -25.00%).
- Over the past 90 days, the highest average high was 20,001 GP on 2026-10-13 UTC, and the lowest was 81 GP on 2026-09-11 UTC.
As of 2026-11-02 UTC. See this week's market summary.
To cite this page: QuantScapers, "Black knife(p) price history", based on OSRS Wiki real-time price data through 2026-11-02 UTC. Calculations by QuantScapers.
What is the Grand Exchange buy limit for Black knife(p)?
You can buy up to 7,000 Black knife(p) every 4 hours on the Grand Exchange.
Is Black knife(p) a members-only item?
Black knife(p) is a members-only item and requires OSRS membership to trade.
What is Black knife(p)'s current buy and sell price?
At the latest update, Black knife(p)'s insta-sell (low) price is 68,000 GP and its insta-buy (high) price is 285 GP on the Grand Exchange.
How much Grand Exchange tax applies to Black knife(p)?
A sale of Black knife(p) pays the standard 2% Grand Exchange tax, which is 5 GP per unit at the current price.
What does a full buy limit of Black knife(p) cost?
Buying the full limit of 7,000 Black knife(p) costs 476,000,000 GP at the current insta-sell price of 68,000 GP each.