Brass key
Opens a door that leads into a dungeon.
Brass key is a free-to-play item on the OSRS Grand Exchange. The latest high price is 454 GP (3m ago) and the low price is 450 GP (17m ago). Buying at the low price and selling at the high price would lose 5 GP per item after the 2% tax (-1.11% of the buy price). You can buy up to 15 every four hours. Buying one at the low price and casting High Alchemy with a nature rune would lose 615 GP. 1,270 were traded in the last 24 hours.
| High | 454 GP () |
|---|---|
| Low | 450 GP () |
| Tax | 9 GP |
| Margin | -5 GP |
| ROI | -1.11% |
| Buy limit | 15 every 4 hours |
| High alchemy | 1 GP |
Buy price (insta-sell / low): 450 GP
Sell price (insta-buy / high): 454 GP
Margin after tax: -5 GP per unit. Grand Exchange tax on a sale is 9 GP.
Buy limit: 15 every 4 hours.
The full buy limit of 15 Brass key costs 6,750 GP at the current buy price. Across that quantity, the after-tax margin is -75 GP.
- Grand Exchange buy limit: 15 every 4 hours
- Free-to-play item
- High alchemy value: 1 GP
- Low alchemy value: 1 GP
- Base value: 1 GP
Brass key price history
- Over the past 7 days, the average high ranged from 425 GP to 715 GP across 139 hourly samples. From 2026-11-01 UTC to 2026-11-08 UTC, it moved from 467 GP to 459 GP (-8 GP, -1.71%).
- Over the past 30 days, the average high ranged from 235 GP to 820 GP across 560 hourly samples. From 2026-10-09 UTC to 2026-11-08 UTC, it moved from 585 GP to 459 GP (-126 GP, -21.54%).
- Over the past 90 days, the average high ranged from 100 GP to 100,000 GP across 1,317 hourly samples. From 2026-08-10 UTC to 2026-11-08 UTC, it moved from 800 GP to 459 GP (-341 GP, -42.63%).
- Over the past 90 days, the highest average high was 100,000 GP on 2026-09-30 UTC, and the lowest was 100 GP on 2026-08-20 UTC.
As of 2026-11-08 UTC. See this week's market summary.
To cite this page: QuantScapers, "Brass key 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 Brass key?
You can buy up to 15 Brass key every 4 hours on the Grand Exchange.
Is Brass key a members-only item?
Brass key is available to free-to-play players. No membership is required to trade it.
What is Brass key's current buy and sell price?
At the latest update, Brass key's insta-sell (low) price is 450 GP and its insta-buy (high) price is 454 GP on the Grand Exchange.
How much Grand Exchange tax applies to Brass key?
A sale of Brass key pays the standard 2% Grand Exchange tax, which is 9 GP per unit at the current price.
What does a full buy limit of Brass key cost?
Buying the full limit of 15 Brass key costs 6,750 GP at the current insta-sell price of 450 GP each.