Brass key
F2PBuy limit: 15·last trade 2m ago
Confidence
Confidence0%
One score blending fill chance, market volume and profit quality.
Fill chance54%
Volume27%
Profit0%
Suggested prices
ConservativeSafe fillsBigger margins
Buy at421
Buy fills29%
Sell at425
Sell fills37%
Net / item-4 (-1.0%)
Est. profit / 4h0
15 units · 54% fill confidence
Insta-sell
421
cheapest buy (full spread)
Insta-buy
425
dearest sell (full spread)
Gross margin
4
GE tax
8
2% per item, max 5M
Net margin
-4
-1.0% ROI
Volatility
9.0%
price noise (1h history)
How to flip the Brass key
The Brass key is a free-to-play Old School RuneScape item — “Opens a door that leads into a dungeon.”. Its Grand Exchange buy limit is 15 per 4 hours. Right now it buys at 421 gp and sells at 425 gp — a net margin of -4 gp (-1.0% ROI) after the 2% Grand Exchange tax of 8 gp. High alchemy yields 1 gp.
To flip it, place a buy offer near 421 gp and a sell offer near 425 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 volume30%
Two-sided liquidity50%
Recent activity98%
Size vs market58%
Why this profit score
Spread persistence0%
No price spike0%
Margin plausibility0%