Gielinor's Ledger
Serum 207 (3)

Serum 207 (3)

3 doses serum 207 as described in Herbi Flax's diary.

MembersBuy limit 2,000Potions & DrinksQuest: [[Shades of Mort'ton]]
Insta-buy

17gp

Insta-sell

11gp

Spread

6gp

54.55%
Margin

+6gp

+54.55% ROI
Volume

—

Trend

—

Price history

1 points · hover for detail

Insta-buy (high)Insta-sell (low)Spread
30D low
11
30D high
17
Volatility
42.9%

Flip calculator

Includes the 2% Grand Exchange tax

gp
gp
units
Net profitProfitable

+6gp

+6 per item · +54.55% ROI

Capital required
11 gp
Gross revenue
17 gp
GE tax (2%, 0/item)
− 0 gp
Break-even sell
11 gp

Item data

High alchemy
7 gp58.8% below market
Low alchemy
5 gp
Shop value
13 gp
Weight
0.03 kg
Skill / type
Herblore
Requires
Herblore 15
Stack / note
Not stackable · noteable
Released
Oct 18, 2004

About Serum 207 (3)

The Serum 207 (3) is a members-only potion in Old School RuneScape.

"3 doses serum 207 as described in Herbi Flax's diary"

Over the last 30 days it traded between 11 and 48 gp on the Grand Exchange, averaging 31 gp. About 5,456 units changed hands per day. The price is up 27.3% across that window. The Grand Exchange buy limit is 2,000 every 4 hours.

Casting High Level Alchemy returns 7 gp, which is 77.4% below the 30-day average price, so alching a bought one loses money.

Recipes

Where this item appears in crafting and processing.

Used to make

Serum 207 (3) price history

Daily averages rolled up per month, newest first.

Monthly average, low and high price of Serum 207 (3) on the Grand Exchange
MonthAverageLowHighVolume
October 202612d341448105,829
September 2026241034105,405
August 2026191125184,194
July 202613722153,312
June 202621d23172887,370
May 20262d22182615,334
April 20261d2525253,336
March 202626173557,253
February 202641513834,987
January 202625117717,856

Across 10 months of recorded prices Serum 207 (3) ranged from 5 gp in February 2026 to 138 gp in February 2026, measured over 218 trading days.

The 30-day average of 31 gp sits in the lower third of that range.

All prices in gp. Volume counts units traded across both sides of the Grand Exchange.

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