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10435 LEGO Duplo Ariel's Magical Underwater Palace thumbnail image

10435 LEGO Duplo Ariel's Magical Underwater Palace
Images 4Description 
10435 LEGO Duplo Ariel's Magical Underwater Palace
  • Ariel's Magical Underwater Palace thumbnail
  • Ariel's Magical Underwater Palace thumbnail
  • Ariel's Magical Underwater Palace thumbnail
  • Ariel's Magical Underwater Palace thumbnail

LEGO 10435 Ariel's Magical Underwater Palace is a Duplo set valued at $100 for new and sealed sets, up 25% from an original retail price of $79.99. The set retired in November 2025 with annual appreciation averaging 11.34% since. On the used market, values range from $67 to $92 based on condition. Secondary market prices for new and sealed sets typically fall between $90 and $112.

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set Ariel's Magical Underwater Palace since November 2025. Medium accuracy
LEGO 10435 Ariel's Magical Underwater Palace is a DUPLO Ariel set released in 2024, containing 116 pieces and 2 DUPLO figures. The build centers on an undersea palace with a dancefloor featuring a spinning function and a movable swing. Characters include Ariel and Fernie, along with a Sebastian crab figure. The set is inspired by the Disney Junior TV series Ariel.

A new and sealed Ariel's Magical Underwater Palace is currently valued at around $100, with annual growth of approximately 11%. The average used price is $83 for those in good overall condition. Based on current trends, this set could be valued near $111 within the next year. The 2 included duplo figures account for approximately 20% of the set's total value. The set was available for 17 months, from June 2024 to November 2025.
All regions

For Sale (New/Sealed)

 (US) NEW SEALED LEGO 10435 Ariel's Magical Underwater Palace - Duplo Disney's Ariel 2024
BrickEconomy Choice
$63.96
(US) NEW LEGO DUPLO Disney Ariels Magical Underwater Palace 10435 Princess Mermaid $75.00
-24.8%
(KR) DUPLO Disney 10435 Ariel's Magical Underwater Palace Set $75.17
-24.6%
(US) NEW SEALED LEGO 10435 Ariel's Magical Underwater Palace Duplo Disney Ariel 2024 $79.95
-19.8%
(US) Duplo 10435 Ariel's Magical Underwater Palace $79.99
-19.8%
(US) DUPLO: Ariel's Magical Underwater Palace (10435) - Brand new, sealed in box $79.99
-19.8%
(US) BrickLink store BrickGod $80.00
-19.8%
(NL) BrickLink store Super Brick Store $82.65
-17.1%
(NL) No minimum buy Fast shipping worldwide Excellent service level $83.00
-16.8%
(JP) 10435 DUPLO: Ariel's Magical Underwater Palace 2+ Block Toy New $85.44
-14.3%
(US) DUPLO Disney Ariels Magical Underwater Palace Building Toy Set (10435) $85.50
-14.3%
(BE) BrickLink store MDSbrick.be $85.86
-13.9%
(FR) BrickLink store Bricks4All. $86.82
-12.9%
(US) Duplo: Ariel's Magical Underwater Palace 10435 Brand New Carefully Shipped $89.95
-9.8%
(NO) BrickLink store Store from Norway $90.33
-9.4%
(CA) Disney Ariel's Magical Underwater Palace (116 Pieces) The Little Mermaid $91.09
-8.6%
(US) DUPLO: Ariel's Magical Underwater Palace (10435) RARE Retired NEW 116 Piece $92.99
-6.7%
Show 19 more listings

Sales Distribution (Last 90 Days)

This chart shows the distribution of sales for the past three months of new/sealed 10435 Ariel's Magical Underwater Palace.

Sale Trends

This chart shows the sales trends (number sold) of new/sealed 10435 Ariel's Magical Underwater Palace.

Duplo figures

Ariel's Magical Underwater Palace contains 2 duplo figures. All 2 duplo figures are exclusive to this set.
dupmermaid03
Disney Princess Ariel
Disney Princess Ariel Duplo figure with a medium azure and metallic pink mermaid tail. (6490064) - dupmermaid03
Exclusive
Value $9.09
dupmermaid04
Disney Princess Fernie Merman
Duplo figure of Fernie, a Disney Princess merman - dupmermaid04
Exclusive
Value $10.89

Sets in Duplo / Ariel

10420 Ariel and Flounder's Cafe Stand

Theme / Subtheme Duplo / Ariel
Year 2024
Pieces / Duplo figures 22 / 2
Availability Retired
10420 LEGO Duplo Ariel and Flounder's Cafe Stand
Retail $19.99
Value ~$19.99

Sets in Duplo from 2024

66788 Big Imaginations Gift Set

Theme / Subtheme Duplo / Value Packs
Year 2024
Pieces 111
Availability Retired
66788 LEGO Duplo Big Imaginations Gift Set
Retail $39.98
Value $39.95

10439 Cars and Trucks Brick Box

Theme Duplo
Year 2024
Pieces / Duplo figures 80 / 2
Availability Retired
10439 LEGO Duplo Cars and Trucks Brick Box
Retail $49.99
Value $56.69
Growth  +13.4%

10416 Caring for Animals at the Farm

Theme / Subtheme Duplo / Farm
Year 2024
Pieces / Duplo figures 74 / 2
Availability Retired
10416 LEGO Duplo Caring for Animals at the Farm
Retail $49.99
Value $46.47

10423 Buildable People with Big Emotions

Theme / Subtheme Duplo / Understanding Feelings
Year 2024
Pieces 71
Availability Retired
10423 LEGO Duplo Buildable People with Big Emotions
Retail $49.99
Value $52.25
Growth  +4.5%

10434 Peppa Pig Supermarket

Theme / Subtheme Duplo / Peppa Pig
Year 2024
Pieces / Duplo figures 70 / 4
Availability Retired
10434 LEGO Duplo Peppa Pig Supermarket
Retail $69.99
Value $67.97

10433 Peppa Pig Birthday House

Theme / Subtheme Duplo / Peppa Pig
Year 2024
Pieces / Duplo figures 59 / 3
Availability Retired
10433 LEGO Duplo Peppa Pig Birthday House
Retail $39.99
Value $40.00
Growth  +0.0%

10422 3in1 Space Shuttle Adventure

Theme / Subtheme Duplo / Space
Year 2024
Pieces / Duplo figures 58 / 2
Availability Retired
10422 LEGO Duplo 3in1 Space Shuttle Adventure
Retail $59.99
Value $67.83
Growth  +13.1%

10421 Alphabet Truck

Theme Duplo
Year 2024
Pieces / Duplo figures 36 / 2
Availability Retail
10421 LEGO Duplo Alphabet Truck
Retail $39.99
Available at retail

My Collection

Ariel's Magical Underwater Palace Reviews

21 reviews
4.6
Collectors
Investors
BrickEconomy Member Review
“Ariel’s Magical Underwater Palace offers a bright, well-composed DUPLO build with a clear architectural focus, using coral shapes, pearlized elements, and layered wall sections to create a visually engaging underwater structure. The large, molded figures of Ariel, Sebastian, and Fernie are nicely detailed and integrate cleanly into the layout, reinforcing the theme without overwhelming the build.”
 

About Duplo Ariel

LEGO Duplo has featured sets based on Ariel from Disney's "The Little Mermaid," designed for younger children. These sets include larger bricks and simpler builds suitable for ages 2 and up. Notable sets include 10515 Ariel's Undersea Castle and 10922 Ariel's Underwater Symphony. These sets allow toddlers to recreate scenes from the movie with characters like Ariel, Flounder, and Sebastian, promoting imaginative play and early building skills.
Summary
Duplo Ariel Ariel's Magical Underwater Palace set 10435 was released in June 2024, retailing for $80, but has since been retired. New, unopened Ariel's Magical Underwater Palace sets are valued at $100, while used sets can be found for $83.
Read more
Immerse fans of Disneys The Little Mermaid in a world of undersea fun with the LEGO DUPLO Disney Ariels 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.

Ariels undersea buildable castle toy also helps preschool kids practice fine motor skills and hand-eye coordination as they assemble this sets building bricks in their own creative way to make a display piece theyll be...
Description provided by LEGO©