Brass key
F2PBuy limit: 15·last trade 8m ago
Confidence
Will it fill?46%
Will it profit?0%
Joint confidence0%
Suggested prices
ConservativeSafe fillsBigger margins
Buy at688
Buy fills36%
Sell at540
Sell fills59%
Net / item-158 (-23.0%)
Est. profit / 4h0
15 units · round-trip fill 21%
Insta-sell
688
cheapest buy (full spread)
Insta-buy
540
dearest sell (full spread)
Gross margin
-148
GE tax
10
2% per item, max 5M
Net margin
-158
-23.0% ROI
Volatility
25.4%
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 688 gp and sells at 540 gp — a net margin of -158 gp (-23.0% ROI) after the 2% Grand Exchange tax of 10 gp. High alchemy yields 1 gp.
To flip it, place a buy offer near 688 gp and a sell offer near 540 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 volume31%
Two-sided liquidity21%
Recent activity93%
Size vs market46%
Why this profit score
Spread persistence0%
No price spike0%
Margin plausibility0%