Security book
F2PBuy limit: 15·last trade 11m ago
Confidence
Confidence31%
One score blending fill chance, market volume and profit quality.
Fill chance28%
Volume19%
Profit42%
Suggested prices
ConservativeSafe fillsBigger margins
Buy at174
Buy fills8%
Sell at183
Sell fills0%
Net / item6 (3.4%)
Est. profit / 4h90
15 units · 28% fill confidence
Insta-sell
173
cheapest buy (full spread)
Insta-buy
184
dearest sell (full spread)
Gross margin
11
GE tax
3
2% per item, max 5M
Net margin
8
4.6% ROI
Volatility
37.3%
price noise (1h history)
How to flip the Security book
The Security book is a free-to-play Old School RuneScape item — “WARNING: Contains information which could make your account secure!”. Its Grand Exchange buy limit is 15 per 4 hours. Right now it buys at 173 gp and sells at 184 gp — a net margin of 8 gp (4.6% ROI) after the 2% Grand Exchange tax of 3 gp. High alchemy yields 1 gp.
To flip it, place a buy offer near 173 gp and a sell offer near 184 gp; the spread minus GE tax is your profit. Confidence figures are model estimates from live OSRS Wiki prices, not guarantees — flip responsibly.
Price history
● insta-buy● insta-sell● moving avg
Why this fill score
Trading volume21%
Two-sided liquidity0%
Recent activity91%
Size vs market6%
Why this profit score
Spread persistence40%
No price spike100%
Margin plausibility100%