LEGO Rock Monster - Boulderax (Trans-Green) Minifigure (pm001)
Rock Monster - Boulderax (Trans-Green) is a LEGO minifigure that appeared in the Mine Mech set which was released in December 2008.
This minifigure currently has a value of $25.32 based on the average of recorded monthly new-condition values from 1 April 2026 to 19 October 2026.
Price over time
View price history table
The table shows recorded monthly data only. The chart may include estimates for gaps in used-condition prices.
| Month | New Price | Used Price | New Sales |
|---|---|---|---|
| January 2022 | $5.33 | $1.33 | 1 |
| February 2022 | $6.66 | $1.33 | 3 |
| March 2022 | $6.66 | $1.33 | 1 |
| April 2022 | $6.66 | $1.33 | 16 |
| May 2022 | $8.00 | $1.33 | 1 |
| June 2022 | $8.00 | $1.33 | 9 |
| July 2022 | $14.66 | $4.00 | 2 |
| August 2022 | $12.00 | $4.00 | 1 |
| September 2022 | $10.66 | $4.00 | 1 |
| October 2022 | $12.00 | $4.00 | 1 |
| November 2022 | $10.66 | $4.00 | 128 |
| December 2022 | $17.33 | $4.00 | 2 |
| January 2023 | $21.33 | $4.00 | 1 |
| February 2023 | $5.33 | $4.00 | 1 |
| March 2023 | $8.00 | $4.00 | 3 |
| April 2023 | $9.33 | $4.00 | 0 |
| May 2023 | $10.66 | $4.00 | 0 |
| June 2023 | $10.66 | $4.00 | 1 |
| July 2023 | $10.66 | $4.00 | 0 |
| August 2023 | $10.66 | $4.00 | 0 |
| September 2023 | $10.66 | $5.33 | 1 |
| October 2023 | $9.33 | $4.00 | 2 |
| November 2023 | $8.00 | $4.00 | 1 |
| December 2023 | $8.00 | $5.33 | 0 |
| January 2024 | $8.00 | $4.00 | 0 |
| February 2024 | $8.00 | $4.00 | 4 |
| March 2024 | $12.00 | $4.00 | 1 |
| April 2024 | $10.66 | $4.00 | 1 |
| May 2024 | $19.99 | $4.00 | 1 |
| June 2024 | $19.99 | $4.00 | 0 |
| July 2024 | $12.00 | $5.33 | 2 |
| August 2024 | $14.66 | $5.33 | 0 |
| September 2024 | $14.66 | $5.33 | 2 |
| October 2024 | $19.99 | $4.00 | 2 |
| November 2024 | $12.00 | $4.00 | 0 |
| December 2024 | $18.66 | $5.33 | 3 |
| January 2025 | $5.33 | $4.00 | 1 |
| February 2025 | $21.33 | $5.33 | 0 |
| March 2025 | $5.33 | $4.00 | 0 |
| April 2025 | $12.00 | $5.33 | 1 |
| May 2025 | $9.33 | $5.33 | 0 |
| June 2025 | $17.33 | $5.33 | 1 |
| July 2025 | $12.00 | $4.00 | 1 |
| August 2025 | $10.66 | $5.33 | 0 |
| September 2025 | $15.99 | $5.33 | 3 |
| October 2025 | $10.66 | $5.33 | 0 |
| November 2025 | $9.33 | $5.33 | 0 |
| December 2025 | $4.00 | $4.00 | 2 |
| January 2026 | $14.66 | $8.00 | 1 |
| February 2026 | $8.00 | $5.33 | 0 |
| March 2026 | $8.00 | $6.66 | 0 |
| April 2026 | $15.99 | $6.66 | 3 |
| May 2026 | $22.66 | $6.66 | 3 |
| June 2026 | $19.99 | $6.66 | 2 |
| July 2026 | $26.66 | $6.66 | 1 |
| August 2026 | $37.32 | $6.66 | 1 |
| September 2026 | $29.32 | $8.00 | 2 |
On average this minifigure is worth 64.8% less in a used condition than in a new condition.
Monthly sales
There have been 104 confirmed sales of the Rock Monster - Boulderax (Trans-Green) minifigure in the last 6 months. Of these 104 sales, 12 have been in a new condition and 92 have been in a used condition
Rock Monster minifigures
There are currently 7 other LEGO minifigures of Rock Monster.
My collection
Minifigure details
Name: Rock Monster - Boulderax (Trans-Green)
Theme: Power Miners
Appears in: 1 set
Bricklink code: pm001
Minifigure value
Confidence: High
Current value: $25.32
Stats
Frequently Asked Questions
How much is the LEGO Rock Monster - Boulderax (Trans-Green) minifigure worth?
The LEGO Rock Monster - Boulderax (Trans-Green) minifigure is currently worth $25.32 based on the average of recorded monthly new-condition values from 1 April 2026 to 19 October 2026.
How many sets does the LEGO Rock Monster - Boulderax (Trans-Green) minifigure appear in?
The LEGO Rock Monster - Boulderax (Trans-Green) minifigure appears in 1 set. This makes it exclusive to the Mine Mech set.
Is the LEGO Rock Monster - Boulderax (Trans-Green) minifigure exclusive?
Yes, the LEGO Rock Monster - Boulderax (Trans-Green) minifigure is exclusive to the Mine Mech set and does not appear in any other LEGO set.
How valuable is the LEGO Rock Monster - Boulderax (Trans-Green) minifigure?
The LEGO Rock Monster - Boulderax (Trans-Green) minifigure is the 2696th most valuable LEGO minifigure overall and the 8th most valuable Power Miners minifigure.
How many versions of LEGO Rock Monster are there?
There are 8 different LEGO minifigure versions of Rock Monster, including this one.
What is the difference in price between new and used condition?
On average, the LEGO Rock Monster - Boulderax (Trans-Green) minifigure is worth 64.8% less in a used condition than in a new condition.
Latest recorded sales month: Sep 26