Cosmic tiara
A tiara infused with the properties of the cosmos.
Cosmic tiara is a members-only item on the OSRS Grand Exchange. The latest high price is 500 GP (10m ago) and the low price is 254 GP (46m ago). Buying at the low price and selling at the high price would leave 236 GP per item after the 2% tax (92.91% of the buy price). You can buy up to 40 every four hours. Buying one at the low price and casting High Alchemy with a nature rune would lose 358 GP. 516 were traded in the last 24 hours.
| High | 500 GP () |
|---|---|
| Low | 254 GP () |
| Tax | 10 GP |
| Margin | 236 GP |
| ROI | 92.91% |
| Buy limit | 40 every 4 hours |
| High alchemy | 60 GP |
Buy price (insta-sell / low): 254 GP
Sell price (insta-buy / high): 500 GP
Margin after tax: 236 GP per unit. Grand Exchange tax on a sale is 10 GP.
Buy limit: 40 every 4 hours.
The full buy limit of 40 Cosmic tiara costs 10,160 GP at the current buy price. Across that quantity, the after-tax margin is 9,440 GP.
- Grand Exchange buy limit: 40 every 4 hours
- Members-only item
- High alchemy value: 60 GP
- Low alchemy value: 40 GP
- Base value: 100 GP
Cosmic tiara price history
- Over the past 7 days, the average high ranged from 100 GP to 2,000 GP across 40 hourly samples. From 2026-11-01 UTC to 2026-11-08 UTC, it moved from 2,000 GP to 500 GP (-1,500 GP, -75.00%).
- Over the past 30 days, the average high ranged from 38 GP to 50,000 GP across 188 hourly samples. From 2026-10-09 UTC to 2026-11-08 UTC, it moved from 107 GP to 500 GP (+393 GP, +367.29%).
- Over the past 90 days, the average high ranged from 2 GP to 50,000 GP across 606 hourly samples. From 2026-08-10 UTC to 2026-11-08 UTC, it moved from 125 GP to 500 GP (+375 GP, +300.00%).
- Over the past 90 days, the highest average high was 50,000 GP on 2026-10-19 UTC, and the lowest was 2 GP on 2026-10-08 UTC.
As of 2026-11-08 UTC. See this week's market summary.
To cite this page: QuantScapers, "Cosmic tiara 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 Cosmic tiara?
You can buy up to 40 Cosmic tiara every 4 hours on the Grand Exchange.
Is Cosmic tiara a members-only item?
Cosmic tiara is a members-only item and requires OSRS membership to trade.
What is Cosmic tiara's current buy and sell price?
At the latest update, Cosmic tiara's insta-sell (low) price is 254 GP and its insta-buy (high) price is 500 GP on the Grand Exchange.
How much Grand Exchange tax applies to Cosmic tiara?
A sale of Cosmic tiara pays the standard 2% Grand Exchange tax, which is 10 GP per unit at the current price.
What does a full buy limit of Cosmic tiara cost?
Buying the full limit of 40 Cosmic tiara costs 10,160 GP at the current insta-sell price of 254 GP each.