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Rainbow crab (1)
You'll need something to break through that shell.
10,000gp
1,000gp
9,000gp
+8,800gp
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—
Price history
1 points · hover for detail
- 30D low
- 1,000
- 30D high
- 10,000
- Volatility
- 163.6%
Flip calculator
Includes the 2% Grand Exchange tax
+8,800gp
+8,800 per item · +880.00% ROI
- Capital required
- 1,000 gp
- Gross revenue
- 10,000 gp
- GE tax (2%, 200/item)
- − 200 gp
- Break-even sell
- 1,020 gp
Item data
- High alchemy
- 180 gp98.2% below market
- Low alchemy
- 120 gp
- Shop value
- 300 gp
- Weight
- 0.6 kg
- Skill / type
- Herblore
- Stack / note
- Not stackable · not noteable
- Released
- Nov 19, 2025
About Rainbow crab (1)
The Rainbow crab (1) is a members-only potion in Old School RuneScape.
"You'll need something to break through that shell"
Over the last 30 days it traded between 1,220 and 5,682 gp on the Grand Exchange, averaging 4,926 gp. About 68 units changed hands per day. Selling one at the average price costs 98 gp in Grand Exchange tax.
Casting High Level Alchemy returns 180 gp, which is 96.3% below the 30-day average price, so alching a bought one loses money.
Rainbow crab (1) price history
Daily averages rolled up per month, newest first.
| Month | Average | Low | High | Volume |
|---|---|---|---|---|
| October 202612d | 4,268 | 1,220 | 5,500 | 355 |
| September 2026 | 5,443 | 2,601 | 5,682 | 2,010 |
| August 2026 | 3,495 | 821 | 7,010 | 3,136 |
| July 2026 | 1,914 | 299 | 3,788 | 14,545 |
| June 202621d | 1,526 | 1,237 | 2,151 | 4,089 |
| May 20262d | 1,573 | 1,525 | 1,621 | 33 |
| April 20261d | 1,745 | 1,745 | 1,745 | n/a |
| March 2026 | 1,482 | 1,002 | 1,983 | 16,929 |
| February 2026 | 1,603 | 723 | 2,952 | 16,025 |
| January 2026 | 2,577 | 983 | 9,649 | 17,856 |
Across 10 months of recorded prices Rainbow crab (1) ranged from 299 gp in July 2026 to 9,649 gp in January 2026, measured over 216 trading days.
The 30-day average of 4,926 gp sits around the middle of that range.
All prices in gp. Volume counts units traded across both sides of the Grand Exchange.
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