Ariel's Magical Underwater Palace

Ariel's Magical Underwater Palace (10435-1) is a set in the Disney Princess theme, released in 2024. It has 116 pieces.

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Number:10435-1
Released:August 2024
Pieces:116
Box size:55.5 × 37.8 × 10.3 cm
Theme:Disney Princess

Box size and weight as measured by Brickset.

In numbers

Over the last 30 days the lowest shop price recorded for this set was 66.77 USD, taken from 30 days with a price on record.

Since 10/5/2026 the lowest shop price has fallen from 72.83 USD to 67.28 USD, by 8 % (based on 30 days with a price on record).

LEGO planned to retire this set in December 2025.

Product details

Number: 10435-1
Name: Ariel's Magical Underwater Palace
Theme: Disney › Disney Princess
Released: August 2024
Launched: August 2024
Retired: November 2025 in the United States
Pieces: 116
RRP: ≈ 70.22 USD (99.99 CAD) (Canada)≈ 101.01 USD (89.99 EUR) (Germany)≈ 105.59 USD (79.99 GBP) (United Kingdom)79.99 USD (United States)
Price per piece: ≈ 0.605 USD (0.862 CAD) (Canada)≈ 0.871 USD (0.776 EUR) (Germany)≈ 0.910 USD (0.690 GBP) (United Kingdom)0.690 USD (United States)
Best price (30 days): 66.77 USD
Price per piece (best offer): 0.580 USD
Barcodes from shop data, not confirmed: EAN-13 5702017583990

≈ 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

LEGO® DUPLO® buildable toddler toy for Little Mermaid fans

Read the full description

Immerse fans of Disney’s The Little Mermaid in a world of undersea fun with the LEGO® DUPLO® ǀ Disney Ariel’s Magical Underwater Palace (10435) building toy for preschool kids. Toddlers aged 2+ use their logical thinking and self-expression to recreate scenes from the Disney Junior TV show Ariel. Toddlers help the Disney Princess Ariel LEGO DUPLO figure to get ready in her bedroom. She then hits the dancefloor, with Fernie and Sebastian playing musical instruments. These are just some of many accessories that inspire toddlers to invent stories about Ariel and her friends. By role-playing the characters, toddlers explore how to build relationships. This buildable educational toy also develops dexterity as toddlers spin the dancefloor and push the movable swing. Ariel’s undersea buildable castle toy also helps preschool kids practice fine motor skills and hand-eye coordination as they assemble this set’s building bricks in their own creative way to make a display piece they’ll be proud of.

Source: LEGO Shop Advertising

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Pricing

Best price ever≈ 66.77 USD (59.99 EUR) Advertising Sealed · gross · idee+spiel · seen 10/29/2026

Current best offer≈ 67.28 USD (59.99 EUR) Advertising Sealed · gross · idee+spiel · seen 11/3/2026

Price history

Lowest shop price now67.28 USD
Lowest ever 66.77 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	67.02 USD
October 2026	66.77 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: 40 · Thalia: 29 · LEGO® Shop (BR): 5 · BRICKMO: 1

Latest price from each shop

Sorted: lowest price first Show highest first

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

≈ 67.28 USD (59.99 EUR)

Go to shop

Thalia Sealed · gross · seen 11/3/2026

≈ 74.01 USD (65.99 EUR)

Go to shop

BRICKMO Sealed · gross · seen 11/3/2026

≈ 77.33 USD (68.95 EUR)

Go to shop

LEGO® Shop (BR) Sealed · unknown tax basis · seen 10/6/2026 · excluded: quarantined

≈ 112.71 USD (559.99 BRL)

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.

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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 ≈ 70.22 USD (99.99 CAD) unknown tax basis Available 5/11/2024 to 11/23/2025.Recorded by BrickDb since 10/2/2026

Germany ≈ 101.01 USD (89.99 EUR) gross Available 5/11/2024 to 6/27/2026.Recorded by BrickDb since 10/2/2026

United Kingdom ≈ 105.59 USD (79.99 GBP) gross Available 5/11/2024 to 12/16/2025.Recorded by BrickDb since 10/2/2026

United States 79.99 USD net Available 5/11/2024 to 11/28/2025.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

54 inventory lines

Catalogue image of the part Duplo Figure with Hair High Red, Light Aqua Shell, Medium Azure Mermaid Legs

Duplo Figure with Hair High Red, Light Aqua Shell, Medium Azure Mermaid Legs 108219pr0002· Magenta

×1

Catalogue image of the part Duplo Figure with Hair Curly Reddish Brown, Lime Mermaid Legs

Duplo Figure with Hair Curly Reddish Brown, Lime Mermaid Legs 109145pr0001· Bright Green

×1

Catalogue image of the part Duplo Brick 2 x 2 x 1 1/2 with Curved Top

Duplo Brick 2 x 2 x 1 1/2 with Curved Top 11170· Bright Light Yellow

×2

Catalogue image of the part Duplo Brick 2 x 4 x 2 Arch

Duplo Brick 2 x 4 x 2 Arch 11198· Yellow

×2

Catalogue image of the part Duplo Treasure Chest Opening 2 x 3 x 3 with Detailed Lid Ends

Duplo Treasure Chest Opening 2 x 3 x 3 with Detailed Lid Ends 11249· Pearl Gold

×1

Catalogue image of the part Duplo Brick 2 x 3 x 2 with Curved Top

Duplo Brick 2 x 3 x 2 with Curved Top 11344· Yellow

×2

Catalogue image of the part Duplo Flower 4 x 4 x 1 with 4 Top Studs

Duplo Flower 4 x 4 x 1 with 4 Top Studs 15515· Medium Lavender

×5

Catalogue image of the part Duplo Building Roof Spire 3 x 3 x 3 with Azure Starfish, Bubbles print

Duplo Building Roof Spire 3 x 3 x 3 with Azure Starfish, Bubbles print 16375pr0002· Medium Lavender

×4

Catalogue image of the part Duplo Brick 2 x 3 with Curved Top

Duplo Brick 2 x 3 with Curved Top 2302· Medium Azure

×2

Catalogue image of the part Duplo Camera

Duplo Camera 24806· Red

×1

Duplo Brush 24807· Medium Azure

×1

Catalogue image of the part Duplo Plate 4 x 6

Duplo Plate 4 x 6 25549· Light Aqua

×2

Catalogue image of the part Duplo Disk with Fruit print

Duplo Disk with Fruit print 27372pr9998· White

×1

Catalogue image of the part Duplo Disk with Xylophone print

Duplo Disk with Xylophone print 27372pr9999· White

×1

Catalogue image of the part Duplo Cone / Ice Cup

Duplo Cone / Ice Cup 27383· White

×1

Catalogue image of the part Duplo Plate Round 4 x 8 Semi-Circle

Duplo Plate Round 4 x 8 Semi-Circle 29304· Bright Light Yellow

×3