Black longsword
F2PBuy limit: 125·last trade 11m ago
Confidence
Will it fill?28%
Will it profit?73%
Joint confidence20%
Suggested prices
ConservativeSafe fillsBigger margins
Buy at174
Buy fills11%
Sell at178
Sell fills0%
Net / item1 (0.6%)
Est. profit / 4h125
125 units · round-trip fill 0%
Insta-sell
173
cheapest buy (full spread)
Insta-buy
178
dearest sell (full spread)
Gross margin
5
GE tax
3
2% per item, max 5M
Net margin
2
1.2% ROI
Volatility
50.5%
price noise (1h history)
How to flip the Black longsword
The Black longsword is a free-to-play Old School RuneScape item — “A razor sharp longsword.”. Its Grand Exchange buy limit is 125 per 4 hours. Right now it buys at 173 gp and sells at 178 gp — a net margin of 2 gp (1.2% ROI) after the 2% Grand Exchange tax of 3 gp. High alchemy yields 576 gp.
To flip it, place a buy offer near 173 gp and a sell offer near 178 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 volume23%
Two-sided liquidity0%
Recent activity91%
Size vs market1%
Why this profit score
Spread persistence40%
No price spike100%
Margin plausibility100%