1,501gp
1,591gp
-90gp
-120gp
—
—
Price history
1 points · hover for detail
- 30D low
- 1,501
- 30D high
- 1,591
- Volatility
- 5.8%
Flip calculator
Includes the 2% Grand Exchange tax
-120gp
-120 per item · -7.54% ROI
Tax puts break-even at 1,623 gp.
- Capital required
- 1,591 gp
- Gross revenue
- 1,501 gp
- GE tax (2%, 30/item)
- − 30 gp
- Break-even sell
- 1,623 gp
Item data
- High alchemy
- 1,920 gp27.9% above market
- Low alchemy
- 1,280 gp
- Shop value
- 3,200 gp
- Weight
- 0.283 kg
- Stack / note
- Not stackable · noteable
- Released
- Jan 27, 2021
About Black locks
Black locks are a members-only item in Old School RuneScape.
"Perhaps someone can do something with this"
Over the last 30 days they traded between 953 and 3,788 gp on the Grand Exchange, averaging 1,617 gp. About 9 units changed hands per day. The price is down 1.7% across that window. The Grand Exchange buy limit is 8 every 4 hours. Selling one at the average price costs 32 gp in Grand Exchange tax.
Casting High Level Alchemy returns 1,920 gp, which is 18.7% above the 30-day average price, so buying and alching it covers its own cost before the nature rune.
How to get Black locks
5 monsters drop Black locks, most commonly Black Chest (purple) (1/59), Black Chest (black) (1/60) and Black Chest (crimson) (1/61).
Dropped by
| Monster | Rarity | Quantity |
|---|---|---|
| Black Chest (purple) | 1/59 | 1 |
| Black Chest (black) | 1/60 | 1 |
| Black Chest (crimson) | 1/61 | 1 |
| Black Chest (brown) | 1/62 | 1 |
| Black Chest (red) | 1/63 | 1 |
Recipes
Where this item appears in crafting and processing.
Used to make
- 1× Black coffin from 1× Broken coffin, 1× Black locks
Black locks price history
Daily averages rolled up per month, newest first.
| Month | Average | Low | High | Volume |
|---|---|---|---|---|
| October 202612d | 1,479 | 1,131 | 1,698 | 102 |
| September 2026 | 1,634 | 953 | 3,788 | 250 |
| August 2026 | 1,746 | 1,112 | 4,802 | 233 |
| July 202626d | 1,589 | 900 | 1,829 | 190 |
| June 202621d | 1,726 | 829 | 4,612 | 3,206 |
| May 20262d | 3,182 | 1,752 | 4,612 | 2 |
| April 20261d | 1,752 | 1,752 | 1,752 | n/a |
| March 2026 | 15,379 | 1,186 | 52,596 | 13,522 |
| February 20268d | 175,581 | 2,100 | 253,448 | 1,564 |
| January 2026 | 1,230 | 698 | 2,152 | 15,782 |
Across 10 months of recorded prices Black locks ranged from 698 gp in January 2026 to 253,448 gp in February 2026, measured over 188 trading days.
The 30-day average of 1,617 gp sits in the lower third of that range.
All prices in gp. Volume counts units traded across both sides of the Grand Exchange.
