Security book
WARNING: Contains information which could make your account secure!
Security book is a free-to-play item on the OSRS Grand Exchange. The latest high price is 150 GP (18m ago) and the low price is 110 GP (10m ago). Buying at the low price and selling at the high price would leave 37 GP per item after the 2% tax (33.64% 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 273 GP. 325 were traded in the last 24 hours.
| High | 150 GP () |
|---|---|
| Low | 110 GP () |
| Tax | 3 GP |
| Margin | 37 GP |
| ROI | 33.64% |
| Buy limit | 15 every 4 hours |
| High alchemy | 1 GP |
Buy price (insta-sell / low): 110 GP
Sell price (insta-buy / high): 150 GP
Margin after tax: 37 GP per unit. Grand Exchange tax on a sale is 3 GP.
Buy limit: 15 every 4 hours.
The full buy limit of 15 Security book costs 1,650 GP at the current buy price. Across that quantity, the after-tax margin is 555 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: 2 GP
Security book price history
- Over the past 7 days, the average high ranged from 81 GP to 184 GP across 13 hourly samples. From 2026-11-02 UTC to 2026-11-08 UTC, it moved from 184 GP to 150 GP (-34 GP, -18.48%).
- Over the past 30 days, the average high ranged from 1 GP to 200 GP across 50 hourly samples. From 2026-10-09 UTC to 2026-11-08 UTC, it moved from 1 GP to 150 GP (+149 GP, +14900.00%).
- Over the past 90 days, the average high ranged from 1 GP to 200 GP across 158 hourly samples. From 2026-08-10 UTC to 2026-11-08 UTC, it moved from 11 GP to 150 GP (+139 GP, +1263.64%).
- Over the past 90 days, the highest average high was 200 GP on 2026-10-29 UTC, and the lowest was 1 GP on 2026-10-10 UTC.
As of 2026-11-08 UTC. See this week's market summary.
To cite this page: QuantScapers, "Security book 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 Security book?
You can buy up to 15 Security book every 4 hours on the Grand Exchange.
Is Security book a members-only item?
Security book is available to free-to-play players. No membership is required to trade it.
What is Security book's current buy and sell price?
At the latest update, Security book's insta-sell (low) price is 110 GP and its insta-buy (high) price is 150 GP on the Grand Exchange.
How much Grand Exchange tax applies to Security book?
A sale of Security book pays the standard 2% Grand Exchange tax, which is 3 GP per unit at the current price.
What does a full buy limit of Security book cost?
Buying the full limit of 15 Security book costs 1,650 GP at the current insta-sell price of 110 GP each.