Sanfew serum(4)
P2PBuy limit: 2,000·last trade 2m ago
Confidence
Will it fill?92%
Will it profit?92%
Joint confidence85%
Suggested prices
ConservativeSafe fillsBigger margins
Buy at21,355
Buy fills26%
Sell at21,961
Sell fills27%
Net / item167 (0.8%)
Est. profit / 4h78.2K
468 units · round-trip fill 7%
Insta-sell
21,355
cheapest buy (full spread)
Insta-buy
21,961
dearest sell (full spread)
Gross margin
606
GE tax
439
2% per item, max 5M
Net margin
167
0.8% ROI
Volatility
2.9%
price noise (1h history)
How to flip the Sanfew serum(4)
The Sanfew serum(4) is a members-only Old School RuneScape item — “A 4 dose Sanfew Serum.”. Its Grand Exchange buy limit is 2,000 per 4 hours. Right now it buys at 21,355 gp and sells at 21,961 gp — a net margin of 167 gp (0.8% ROI) after the 2% Grand Exchange tax of 439 gp. High alchemy yields 180 gp.
To flip it, place a buy offer near 21,355 gp and a sell offer near 21,961 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 volume94%
Two-sided liquidity69%
Recent activity98%
Size vs market95%
Why this profit score
Spread persistence88%
No price spike93%
Margin plausibility100%