Serum 207 (4)
P2PBuy limit: 2,000·last trade 43m ago
Confidence
Confidence37%
One score blending fill chance, market volume and profit quality.
Fill chance27%
Volume29%
Profit55%
Suggested prices
ConservativeSafe fillsBigger margins
Buy at31
Buy fills0%
Sell at39
Sell fills10%
Net / item8 (25.8%)
Est. profit / 4h16.0K
2,000 units · 27% fill confidence
Insta-sell
30
cheapest buy (full spread)
Insta-buy
40
dearest sell (full spread)
Gross margin
10
GE tax
0
2% per item, max 5M
Net margin
10
33.3% ROI
Volatility
35.8%
price noise (1h history)
How to flip the Serum 207 (4)
The Serum 207 (4) is a members-only Old School RuneScape item — “4 doses serum 207 as described in Herbi Flax's diary.”. Its Grand Exchange buy limit is 2,000 per 4 hours. Right now it buys at 30 gp and sells at 40 gp — a net margin of 10 gp (33.3% ROI) after the 2% Grand Exchange tax. High alchemy yields 8 gp.
To flip it, place a buy offer near 30 gp and a sell offer near 40 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 volume33%
Two-sided liquidity0%
Recent activity70%
Size vs market0%
Why this profit score
Spread persistence40%
No price spike100%
Margin plausibility95%