LEGO Mermaid Gabby's Aquarium Adventure (11204-1)
The Mermaid Gabby's Aquarium Adventure (11204-1) is a LEGO Gabby's Dollhouse set that was released in August 2025 and retired in July 2026 with a shelf life of 11 months 30 days.
This LEGO set has 103 pieces and had a RRP of $22.99 (£17.99 / 19.99€) which equates to a price per piece of 0.22c (0.17p / 0.19€). Since it retired it has grown in value by 2.0% and now has a value of $23.44 based on average sale price over the last 6 months.
Price over time
View price history table
| Month | Avg Price | Sales |
|---|---|---|
| Feb 26 | $27.52 | 1 |
| Mar 26 | $29.36 | 0 |
| Apr 26 | $31.19 | 0 |
| May 26 | $33.03 | 0 |
| Jun 26 | $36.70 | 1 |
Minifigures
This set contains 3 minifigures with a combined value of $14.45. 2 of the minifigures in this set are exclusive, meaning they don't appear in any other LEGO sets.
Monthly sales
We have recorded 2 sales of the Mermaid Gabby's Aquarium Adventure set since Feb 26. The chart below shows the number of recorded sales per month, which can help indicate the popularity and availability of this set on the secondary market.
Value breakdown
The current value of Mermaid Gabby's Aquarium Adventure is $23.44
The 3 minifigures in this set make up 62% of the total set value.
The Gabby - Mermaid minifigure is the most valuable minifigure in this set who contributes 31% of the set value .
My collection
Set details
Name: Mermaid Gabby's Aquarium Adventure
Theme: Gabby's Dollhouse
Set number: 11204-1
Status: Retired
Retired for: 2 months
Pieces: 103
Minifigures: 3
Aug 1, 2025
Aug 1, 2025
Aug 1, 2025
Aug 1, 2025
Jul 31, 2026
Jul 31, 2026
Jul 31, 2026
Jul 31, 2026
Shelf life: 1 year,
$22.99
£17.99
19.99€
0.223c
0.175p
0.194€
Set value
Confidence: Low
Current value: $23.44
Increase from RRP: 2.0%
Yearly ROI: 2.0%
Minifigures
Set colors
The Mermaid Gabby's Aquarium Adventure has 103 pieces and is ranked 7703 on the list of biggest LEGO sets ever made.
The most common colour in this set is Tan
The most common part in this set is Arch 1 x 3 x 3
Stats
Frequently Asked Questions
How much is the LEGO Mermaid Gabby's Aquarium Adventure (11204-1) worth?
The LEGO Mermaid Gabby's Aquarium Adventure is currently worth $23.44 based on the average sale price over the last 6 months. The original retail price was $22.99.
How many pieces are in the LEGO Mermaid Gabby's Aquarium Adventure?
The LEGO Mermaid Gabby's Aquarium Adventure (11204-1) contains 103 pieces, making it the 7703rd biggest LEGO set ever made.
Is the LEGO Mermaid Gabby's Aquarium Adventure retired?
Yes, the LEGO Mermaid Gabby's Aquarium Adventure has been retired. It was retired in July 2026 and is no longer available from LEGO directly. You can find it on the secondary market through sites like BrickLink and eBay.
How many minifigures are in the LEGO Mermaid Gabby's Aquarium Adventure?
The LEGO Mermaid Gabby's Aquarium Adventure contains 3 minifigures, 2 of which are exclusive to this set. The minifigures include: Gabby - Mermaid, Kitty Jellyfish, MerCat.
When was the LEGO Mermaid Gabby's Aquarium Adventure released?
The LEGO Mermaid Gabby's Aquarium Adventure (11204-1) was released in August 2025 as part of the Gabby's Dollhouse theme.
Is the LEGO Mermaid Gabby's Aquarium Adventure a good investment?
Since retirement, the LEGO Mermaid Gabby's Aquarium Adventure has increased in value by 2.0% from its original retail price.
Price data last updated: Jun 26
