Gielinor's Ledger
Security book

Security book

WARNING: Contains information which could make your account secure!

Free-to-playBuy limit 15
Insta-buy

1gp

Insta-sell

—gp

Spread

—gp

—
Margin

—gp

—
Volume

—

Trend

—

Price history

1 points · hover for detail

Insta-buy (high)Insta-sell (low)Spread
30D low
1
30D high
1
Volatility
0.0%

Flip calculator

Includes the 2% Grand Exchange tax

gp
gp
units
Net profitProfitable

+1gp

+1 per item · — ROI

Capital required
0 gp
Gross revenue
1 gp
GE tax (2%, 0/item)
− 0 gp
Break-even sell
0 gp

Item data

High alchemy
1 gp0.0% above market
Low alchemy
1 gp
Shop value
2 gp
Weight
0.01 kg
Stack / note
Not stackable · noteable
Released
Jul 4, 2006

About Security book

The Security book is a free-to-play item in Old School RuneScape.

"WARNING: Contains information which could make your account secure!"

Over the last 30 days it traded between 7 and 187 gp on the Grand Exchange, averaging 94 gp. About 450 units changed hands per day. The price is down 18.2% across that window. The Grand Exchange buy limit is 15 every 4 hours. Selling one at the average price costs 1 gp in Grand Exchange tax.

Casting High Level Alchemy returns 1 gp, which is 98.9% below the 30-day average price, so alching a bought one loses money.

How to get Security book

9 shops sell Security book, including Rimmington General Store and Moon Clan General Store.

Sold in shops

ShopPriceStock
Rimmington General Store2 gp5
Moon Clan General Store2 gp5
Falador General Store2 gp5
Lumbridge General Store2 gp5
Varrock General Store2 gp5
Zanaris General Store2 gp5
Al Kharid General Store2 gp5
Edgeville General Store2 gp5
Trader Stan's Trading Post5 gp5

Security book price history

Daily averages rolled up per month, newest first.

Monthly average, low and high price of Security book on the Grand Exchange
MonthAverageLowHighVolume
October 20264d5171347,597
September 202696441876,618
August 202684451936,336
July 2026113452088,959
June 202621d97612184,506
May 20262d471084135
April 20261d27272743
March 20261324337016,143
February 20261778057114,197
January 20261077320617,678

Across 10 months of recorded prices Security book ranged from 7 gp in October 2026 to 571 gp in February 2026, measured over 210 trading days.

The 30-day average of 94 gp sits in the lower third of that range.

All prices in gp. Volume counts units traded across both sides of the Grand Exchange.