Grubby key
It looks like the key to a chest (Used to open the grubby chest in Forthos Dungeon).
36,300gp
34,378gp
1,922gp
+1,196gp
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Price history
1 points · hover for detail
Volume · units traded
- 30D low
- 34,378
- 30D high
- 36,300
- Volatility
- 5.4%
Flip calculator
Includes the 2% Grand Exchange tax
+1,196gp
+1,196 per item · +3.48% ROI
- Capital required
- 34,378 gp
- Gross revenue
- 36,300 gp
- GE tax (2%, 726/item)
- − 726 gp
- Break-even sell
- 35,079 gp
Item data
- High alchemy
- 19 gp99.9% below market
- Low alchemy
- 12 gp
- Shop value
- 32 gp
- Weight
- 0.001 kg
- Stack / note
- Not stackable · noteable
- Released
- Jul 4, 2019
About Grubby key
The Grubby key is a members-only item in Old School RuneScape.
"It looks like the key to a chest (Used to open the grubby chest in Forthos Dungeon)"
Over the last 30 days it traded between 29,799 and 32,559 gp on the Grand Exchange, averaging 31,240 gp. About 5,778 units changed hands per day. The Grand Exchange buy limit is 11,000 every 4 hours. Selling one at the average price costs 624 gp in Grand Exchange tax.
Casting High Level Alchemy returns 19 gp, which is 99.9% below the 30-day average price, so alching a bought one loses money.
How to get Grubby key
7 monsters drop Grubby key, most commonly Sarachnis (1/15), Red dragon (1/50) and Undead Druid (1/75).
Dropped by
| Monster | Rarity | Quantity |
|---|---|---|
| Sarachnis | 1/15 | 1 |
| Red dragon | 1/50 | 1 |
| Undead Druid | 1/75 | 1 |
| Baby red dragon | 1/80 | 1 |
| Temple Spider | 1/100 | 1 |
| Gourmet impling | 1/500 | 1 |
| Gourmet impling jar | 1/500 | 1 |
Grubby key price history
Daily averages rolled up per month, newest first.
| Month | Average | Low | High | Volume |
|---|---|---|---|---|
| October 202612d | 30,974 | 30,459 | 31,907 | 78,194 |
| September 2026 | 31,640 | 29,799 | 32,559 | 147,931 |
| August 2026 | 34,411 | 32,313 | 35,580 | 151,092 |
| July 2026 | 34,899 | 30,911 | 37,980 | 184,437 |
| June 202621d | 33,399 | 30,996 | 35,896 | 93,526 |
| May 20262d | 35,474 | 34,825 | 36,122 | 7,657 |
| April 20261d | 34,261 | 34,261 | 34,261 | 2,587 |
| March 2026 | 32,778 | 30,949 | 34,911 | 75,198 |
| February 2026 | 34,078 | 32,025 | 36,434 | 21,966 |
| January 2026 | 33,073 | 30,562 | 37,612 | 17,856 |
Across 10 months of recorded prices Grubby key ranged from 29,799 gp in September 2026 to 37,980 gp in July 2026, measured over 218 trading days.
The 30-day average of 31,240 gp sits in the lower third of that range.
All prices in gp. Volume counts units traded across both sides of the Grand Exchange.
