Mermaid Gabby's Aquarium Adventure

Mermaid Gabby's Aquarium Adventure (11204-1) is a set in the Gabby's Dollhouse theme, released in 2025. It has 105 pieces and 3 minifigures.

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Number:11204-1
Released:August 2025
Pieces:105
Box size:26.2 × 14.1 × 6.1 cm
Theme:Gabby's Dollhouse

Box size and weight as measured by Brickset.

In numbers

Over the last 30 days the lowest shop price recorded for this set was 18.31 USD, taken from 30 days with a price on record.

Since 9/25/2026 the lowest shop price has risen from 20.47 USD to 22.35 USD, by 9 % (based on 42 days with a price on record).

LEGO planned to retire this set in July 2026.

Product details

Number: 11204-1
Name: Mermaid Gabby's Aquarium Adventure
Theme: Gabby's Dollhouse
Released: August 2025
Launched: August 2025
Retired: August 2026 in the United States
Pieces: 105
Minifigures: 3
RRP: ≈ 17.55 USD (24.99 CAD) (Canada)≈ 22.44 USD (19.99 EUR) (Germany)≈ 23.75 USD (17.99 GBP) (United Kingdom)22.99 USD (United States)
Price per piece: ≈ 0.167 USD (0.238 CAD) (Canada)≈ 0.214 USD (0.190 EUR) (Germany)≈ 0.226 USD (0.171 GBP) (United Kingdom)0.219 USD (United States)
Best price (30 days): 18.31 USD
Price per piece (best offer): 0.213 USD

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

BrickLink market data

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Description from LEGO.com

Gabby's Dollhouse undersea building toy for kids 4 and up

Source: LEGO Shop Advertising

Can I build this?

Check this set against the parts you already own.

We count your loose parts and the copies you own,
suggest the fewest copies to open,
and list what is still missing.

Pricing

Best price ever≈ 18.31 USD (16.39 EUR) Advertising Sealed · gross · idee+spiel · seen 10/31/2026

Current best offer≈ 22.35 USD (19.99 EUR) Advertising Sealed · gross · idee+spiel · seen 11/3/2026

Price history

Lowest shop price now22.35 USD
Lowest ever 18.31 USD

Each day's lowest price among the shops' current offers, including VAT. A price in another currency is converted at the ECB reference rate of its day.

Monthly lows as a table

Month	Lowest price
November 2026	18.31 USD
October 2026	18.31 USD
September 2026	18.69 USD

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Price statistics by condition

Nobody has sold this set recently.

Sources idee+spiel: 53 · LEGO® Shop (FR): 8 · BRICKMO: 3 · MediaMarkt (AT): 2 · LEGO® Shop (US): 1

Latest price from each shop

Sorted: lowest price first Show highest first

Countries (all)

Show prices for

Austria (AT)

Germany (DE)

France (FR)

United States (US)

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Only prices delivered there

What each source tells us:

Shops: the country they are in, and a delivery within it. None says whether it delivers abroad.
LEGO's own shops: one storefront per country, each delivering within its country.
Hugendubel: in Germany, delivering to Germany and to Austria.
eBay: the country the item is in, and a delivery within the country of the eBay site it is listed on.
BrickLink: averages over sellers worldwide - no seller's country and no delivery.

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MediaMarkt (AT) Sealed · gross · seen 10/23/2026

≈ 19.02 USD (16.99 EUR)

Not in the shop's feed for over a week

idee+spiel Sealed · gross · seen 11/3/2026

≈ 22.35 USD (19.99 EUR)

Go to shop

LEGO® Shop (FR) Sealed · gross · seen 10/9/2026 Out of stock at LEGO

≈ 22.40 USD (19.99 EUR)

Not in the shop's feed for over a week

BRICKMO Sealed · gross · seen 11/5/2026

≈ 22.48 USD (19.95 EUR)

Go to shop

LEGO® Shop (US) Sealed · net · seen 10/8/2026

22.99 USD

Not in the shop's feed for over a week

Amazon.com BrickDb shows no Amazon prices. The link opens a search for this set on Amazon's own site.

Advertising

See the price at Amazon

Where these prices come from

On eBay

The cheapest eBay listings we saw in the last seven days. They are sellers' asking prices, so they are not in the shop price list or the best offer.

We have not seen a current eBay listing for this set.

Recommended retail price

What LEGO published as the recommended retail price, market by market, in that market's own currency. No market's price is ever derived from another's.

Canada ≈ 17.55 USD (24.99 CAD) unknown tax basis Available 5/24/2025 to 8/25/2026.Recorded by BrickDb since 10/2/2026

Germany ≈ 22.44 USD (19.99 EUR) gross Available 5/25/2025 to 6/27/2026.Recorded by BrickDb since 10/2/2026

United Kingdom ≈ 23.75 USD (17.99 GBP) gross Available 5/24/2025 to 7/29/2026.Recorded by BrickDb since 10/2/2026

United States 22.99 USD net Available 5/24/2025 to 8/29/2026.Recorded by BrickDb since 10/2/2026

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Building instructions

All building instructions for this set on LEGO.com

Parts in this set

59 inventory lines

Catalogue image of the part Brick Curved 2 x 1 No Studs [1/2 Bow]

Brick Curved 2 x 1 No Studs [1/2 Bow] 11477· Tan

×1

Catalogue image of the part Brick Arch 1 x 3 x 3 [Gothic]

Brick Arch 1 x 3 x 3 [Gothic] 13965· Tan

×4

Brick Arch 1 x 3 x 3 [Gothic] 13965· Medium Azure

×4

Catalogue image of the part Brick Sloped 45° 2 x 1 Triple with Inside Stud Holder

Brick Sloped 45° 2 x 1 Triple with Inside Stud Holder 15571· Blue

×2

Catalogue image of the part Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)

Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573· Dark Pink

×1

Catalogue image of the part Rock - Heart Jewel with Shaft

Rock - Heart Jewel with Shaft 15745· Trans-Dark Pink

×1

Catalogue image of the part Brick Arch 1 x 8 x 2 Raised

Brick Arch 1 x 8 x 2 Raised 16577· Tan

×2

Catalogue image of the part Brick Curved 1 x 3 x 2 Inverted [Inside Bow]

Brick Curved 1 x 3 x 2 Inverted [Inside Bow] 18653· Medium Azure

×2

Catalogue image of the part Plate Special Round 2 x 2 with Center Stud (Jumper Plate)

Plate Special Round 2 x 2 with Center Stud (Jumper Plate) 18674· Dark Pink

×2

Catalogue image of the part Windscreen 4 x 4 x 1 2/3 Canopy Half Sphere with Handle

Windscreen 4 x 4 x 1 2/3 Canopy Half Sphere with Handle 18990· Trans-Light Blue

×1

Catalogue image of the part Bar Holder with Hole and Bar Handle

Bar Holder with Hole and Bar Handle 23443· Blue

×1

Catalogue image of the part Tile Special 1 x 2 Grille with Bottom Groove

Tile Special 1 x 2 Grille with Bottom Groove 2412b· Dark Azure

×1

Catalogue image of the part Tile 1 x 4 with Groove

Tile 1 x 4 with Groove 2431· Medium Azure

×2

Catalogue image of the part Plate Special 8 x 8 x 2/3 with Four 1 x 4 Recessed Edges

Plate Special 8 x 8 x 2/3 with Four 1 x 4 Recessed Edges 2628· Blue

×1

Catalogue image of the part Slide Curved Left 90°

Slide Curved Left 90° 28387· Medium Azure

×1

Brick 2 x 3 3002· Tan

×1

3 minifigures

Minifigures in this set

Catalogue image of the minifigure Gabby, Mermaid Tail

Same theme, piece count within 15 %

Similar sets

Kitty Fairy's Garden House

/ 11212-1 /

Gabby's Dollhouse2026Pieces: 97 Minifigures: 1

Mermaid Gabby's Aquarium Adventure

In numbers

Product details

BrickLink market data

Description from LEGO.com

Can I build this?

Pricing

Price history

Latest price from each shop

On eBay

Recommended retail price

Building instructions

Parts in this set

Minifigures in this set

Gabby, Mermaid Tail

Kitty Jellyfish

MerCat

Similar sets

Kitty Fairy's Garden House