Super
Very nice gift for my granddaughter.
Retailer prices for 43254 are sorted by the latest lowest price.
Retailer pricesPrice history 43254
We check Dutch retailers every day. This graph shows the full daily-low price series we have for this set.
Daily lowest price tracked across 20 Dutch retailers. The dotted line marks LEGO's recommended retail price.
Source: daily measurement at 20 Dutch retailers, 14 Dec 2025 – 31 May 2026. RRP via LEGO.com.
| Date | Price | Retailer | Stock |
|---|---|---|---|
| €26,09 | Coppens Warenhuis | In stock | |
| €20,93 | Joybuy | In stock | |
| €27,99 | Playtoday | In stock | |
| €23,95 | MisterBricks | In stock | |
| €23,95 | BuildingToys | In stock | |
| €23,99 | Steentjesplein | In stock | |
| €27,99 | Playtoday | In stock | |
| €23,95 | MisterBricks | In stock | |
| €23,95 | BuildingToys | In stock | |
| €26,09 | Coppens Warenhuis | In stock | |
| €20,93 | Joybuy | In stock | |
| €27,99 | Playtoday | In stock |
Calibrated forecast based on historical pricing, seasonal patterns and retailer behavior. Tuned conservatively: rather cautious than optimistic.
Low likelihood of further drops. Current price is near the all-time low.
What to know about LEGO 43254 before you buy.
For LEGO Ariel's Crystal Cavern (43254), we track 6 retailers in the Netherlands, with 6 currently in stock. The current lowest price is €20,93. Use price history and stock data to judge whether this is a good time to buy.
Exploration and play awaits kids aged 4+ as they learn to build with this LEGO® ǀ Disney Princess Ariel’s Crystal Cavern (43254) building toy. This buildable mermaid playset gift helps boost kids’ problem-solving skills with creative play. Inside is a cavern with a spinning platform and slide, a whale vehicle, a shipwreck with a treasure chest and a cauldron. It also includes Ursula and Ariel LEGO ǀ Disney mini-doll figures and a Flounder LEGO ǀ Disney fish figure. The building kit includes a Starter Brick element to get building underway quickly, and instructions are provided in a colorful picture-story guide for kids who are just starting to learn how to read. This 4+ LEGO building set for kids is easy to take on playdates and is a great way for adults to share in the building fun with youngsters. The construction kit also works well with other compatible LEGO 4+ building sets and LEGO ǀ Disney buildable playsets (sold separately) in the range.
All about this set
Background, build experience, collector context, and buying notes in one story.
For LEGO Ariel's Crystal Cavern (43254), we track 6 retailers in the Netherlands, with 6 currently in stock. The current lowest price is €20,93. Use price history and stock data to judge whether this is a good time to buy.
Exploration and play awaits kids aged 4+ as they learn to build with this LEGO® ǀ Disney Princess Ariel’s Crystal Cavern (43254) building toy. This buildable mermaid playset gift helps boost kids’ problem-solving skills with creative play. Inside is a cavern with a spinning platform and slide, a whale vehicle, a shipwreck with a treasure chest and a cauldron. It also includes Ursula and Ariel LEGO ǀ Disney mini-doll figures and a Flounder LEGO ǀ Disney fish figure. The building kit includes a Starter Brick element to get building underway quickly, and instructions are provided in a colorful picture-story guide for kids who are just starting to learn how to read. This 4+ LEGO building set for kids is easy to take on playdates and is a great way for adults to share in the building fun with youngsters. The construction kit also works well with other compatible LEGO 4+ building sets and LEGO ǀ Disney buildable playsets (sold separately) in the range.
The current lowest price is €20,93 across 6 tracked retailers.
Instructions & specifications
Dimensions, pieces, build steps, and the official PDF building instruction.
Parts inventory
Known set data around pieces and build context.
Bricks Round and Cones
Brick Round 2 x 2 with Axle Hole
Part ID 3941 · Trans-Bright Green
Qty 5
Brick Round 2 x 2 with Axle Hole
Part ID 3941 · Trans-Dark Pink
Qty 4
Brick Round 1 x 1 Open Stud
Part ID 3062b · Opal Trans-Clear
Qty 2
Cone 1 x 1 [Top Groove]
Part ID 59900 · Glitter Trans-Purple
Qty 1
Tiles Special
Tile Special 1 x 2 Grille with Bottom Groove
Part ID 2412b · Lime
Qty 4
Wheels and Tyres
Wheel 8 x 6 with Slot
Part ID 34337 · Coral
Qty 4
Plants & Trees
Plant, Sea Grass
Part ID 30093 · Bright Green
Qty 3
Plant, Plate 1 x 1 Round with 3 Leaves
Part ID 32607 · Coral
Qty 2
Flower 4 x 4 Rounded Petals with Center Stud
Part ID 35473 · Yellowish Green
Qty 1
Plant, Stem with 3 Leaves and Bottom Pin
Part ID 37695 · Lavender
Qty 1
Plates Special
Plate Special 2 x 2 with Groove and Center Stud (Jumper)
Part ID 87580 · Dark Purple
Qty 3
Plate Special 2 x 2 with Groove and Center Stud (Jumper)
Part ID 87580 · Trans-Light Blue
Qty 3
Plate Special 1 x 4 with Wheels Holder
Part ID 2926 · Black
Qty 2
Plate Special 2 x 2 with Double Inverted Curve, 1 Stud
Part ID 4190 · Dark Turquoise
Qty 2
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)
Part ID 15573 · Dark Turquoise
Qty 1
Plate Special 8 x 9 x 2/3 with 1 x 4 Recessed
Part ID 15624 · Medium Azure
Qty 1
Plate Special 1 x 2 [Side Handle Closed Ends]
Part ID 48336 · White
Qty 1
Plate Special 2 x 2 with Groove and Center Stud (Jumper)
Part ID 87580 · Yellow
Qty 1
Bracket 1 x 2 - 2 x 2 Inverted
Part ID 99207 · White
Qty 1
Bricks Curved
Slope Curved 2 x 2 Inverted with 1 x 2 Cutouts
Part ID 1750 · Dark Turquoise
Qty 2
Brick Arch 1 x 4 x 2
Part ID 6182 · Medium Nougat
Qty 2
Brick Curved 2 x 2 x 1 1/3 Curved Top, Corner
Part ID 67810 · Dark Turquoise
Qty 2
Brick Curved 2 x 1 with Inverted Cutout
Part ID 78666 · Dark Turquoise
Qty 2
Slope Curved 2 x 2 x 2/3
Part ID 15068 · Light Aqua
Qty 1
Slope Curved 4 x 1 Double with No Studs
Part ID 93273 · Medium Azure
Qty 1
Bricks Sloped
Slope 45° 2 x 1 with 2/3 Inverted Cutout and no stud
Part ID 28192 · Reddish Brown
Qty 2
Slope 45° 2 x 1 with Bottom Pin
Part ID 3040b · Trans-Light Blue
Qty 2
Slope 33° 3 x 1
Part ID 4286 · Lavender
Qty 2
Slope 45° 2 x 1 with 2/3 Inverted Cutout and no stud
Part ID 28192 · White
Qty 1
Slope Inverted 45° 4 x 1 Double with 1 x 2 Recessed
Part ID 32802 · Medium Nougat
Qty 1
Bars, Ladders and Fences
Curled Decorative Ornament with Bar
Part ID 28870 · Black
Qty 2
Bar Holder with Clip
Part ID 11090 · Bright Green
Qty 1
Fence Ornamented 1 x 4 x 2 with 4 Studs
Part ID 19121 · White
Qty 1
Fence Lattice 1 x 4 x 1
Part ID 3633 · Pearl Gold
Qty 1
Antenna 1 x 4 with Flat Top
Part ID 3957b · Reddish Brown
Qty 1
Bricks
Brick 1 x 2
Part ID 3004 · Lavender
Qty 2
Brick 1 x 2 x 5 without Side Supports
Part ID 46212 · Trans-Dark Pink
Qty 2
Brick 1 x 2
Part ID 3004 · Yellow
Qty 1
Brick 1 x 6
Part ID 3009 · Lavender
Qty 1
Brick 1 x 4
Part ID 3010 · Yellow
Qty 1
Brick 1 x 4
Part ID 3010 · Dark Turquoise
Qty 1
Plates
Plate 2 x 4
Part ID 3020 · Reddish Brown
Qty 2
Plate 1 x 2
Part ID 3023 · Light Aqua
Qty 2
Plate 1 x 2
Part ID 3023 · Trans-Light Blue
Qty 2
Plate 1 x 4
Part ID 3710 · Reddish Brown
Qty 2
Plate 2 x 4
Part ID 3020 · Medium Azure
Qty 1
Plate 2 x 4
Part ID 3020 · Dark Purple
Qty 1
Plate 2 x 4
Part ID 3020 · Light Aqua
Qty 1
Plate 2 x 2
Part ID 3022 · Yellow
Qty 1
Plate 4 x 4
Part ID 3031 · Medium Azure
Qty 1
Plate 2 x 8
Part ID 3034 · Dark Turquoise
Qty 1
Plate 1 x 4
Part ID 3710 · Dark Turquoise
Qty 1
Plate 1 x 4
Part ID 3710 · Medium Azure
Qty 1
Rock
Rock Panel 2 x 4 x 6
Part ID 47847 · Trans-Dark Pink
Qty 2
Rock 1 x 1 Jewel / Gem 24 Facet
Part ID 30153 · Trans-Dark Pink
Qty 1
Rock 1 x 1 Crystal 5 Point
Part ID 30385 · Opal Trans-Purple
Qty 1
Panels
Panel 1 x 2 x 1 [Rounded Corners]
Part ID 4865b · Trans-Light Blue
Qty 2
Panel 1 x 6 x 7 with 2 Columns and Arch
Part ID 40066 · Lavender
Qty 1
Animals / Creatures
Animal, Sea Life Set, Star Fish
Part ID 49595c · Yellow
Qty 2
Animal, Sea Life Set, Clam Shell Small
Part ID 49595d · Yellow
Qty 2
Animal, Sea Life Set, Fish with Bar
Part ID 49595e · Yellow
Qty 2
Animal, Sea Life Set, Snail with Bar
Part ID 49595f · Yellow
Qty 2
Animal, Sea Life Set, Seahorse with Bar
Part ID 49595g · Yellow
Qty 2
Animal, Fish with Large Eyes, Medium Blue Dorsal and Tail Fin and Blue Stripes on Top Print (Flounder / Fabius)
Part ID 15679pr0002 · Yellow
Qty 1
Animal, Sea Life Set, Octopus
Part ID 49595a · Yellow
Qty 1
Animal, Sea Life Set, Clam Shell Large
Part ID 49595b · Yellow
Qty 1
Plates Round Curved and Dishes
Plate Round Corner 6 x 6
Part ID 6003 · Medium Azure
Qty 2
Plate 8 x 8 with Rounded End
Part ID 41948 · Medium Lavender
Qty 1
Dish 2 x 2 Inverted [Radar]
Part ID 4740 · Trans-Dark Pink
Qty 1
Plate Round Corner 6 x 6
Part ID 6003 · Tan
Qty 1
Bricks Special
Brick Special 1 x 2 with 1 Center Stud on 1 Side, Bottom Stud Holder
Part ID 86876 · Black
Qty 2
Brick Special 1 x 1 with Stud on 1 Side
Part ID 87087 · Dark Turquoise
Qty 2
Slide Curved Left 90°
Part ID 28387 · Yellow
Qty 1
Brick Special 1 x 2 with 1 Center Stud on 1 Side, Bottom Stud Holder
Part ID 86876 · Dark Turquoise
Qty 1
Tiles Round and Curved
Tile Round 1 x 1 with White Dot/Circle/Eye print
Part ID 98138pr0107 · Black
Qty 2
Tile Round 1 x 2 Half Circle
Part ID 1748 · Black
Qty 1
Tile Round 1 x 1
Part ID 98138 · Trans-Dark Pink
Qty 1
Animal / Creature Body Parts
Animal Body Part, Clam / Scallop Half Shell with 4 Studs
Part ID 18970 · Coral
Qty 1
Animal Body Part, Clam / Scallop Half Shell with 4 Studs
Part ID 18970 · White
Qty 1
Minifig Accessories
Book Cover [Plain]
Part ID 24093 · Reddish Brown
Qty 1
Book Binding with Two Studs
Part ID 24324 · Reddish Brown
Qty 1
Equipment Magnifying Glass with Thick Frame, Hollow Handle, Trans-Clear Lens
Part ID 38648pat0001 · Black
Qty 1
Equipment Pot / Cauldron 3 x 3 x 1 & 3/4 with Handles
Part ID 4341 · Black
Qty 1
Equipment Cutlery - Fork
Part ID 79741 · Flat Silver
Qty 1
Equipment Bottle / Erlenmeyer Flask with Trans-Bright Green Fluid Pattern
Part ID 93549pat0001 · Trans-Clear
Qty 1
Tiles
Tile 2 x 3
Part ID 26603 · Reddish Brown
Qty 1
Tile 1 x 2 with Parchment, Flask, Notes print
Part ID 3069bpr9972 · Tan
Qty 1
Containers
Container Box 2 x 2 x 1 Reinforced Bottom
Part ID 2821 · Medium Nougat
Qty 1
Treasure Chest Bottom with Rear Slots, No Groove
Part ID 4738c · Medium Lavender
Qty 1
Treasure Chest Lid [Thick Hinge]
Part ID 4739a · Medium Lavender
Qty 1
Hinges, Arms and Turntables
Turntable 2 x 2 Plate, Light Bluish Gray Top [Complete Assembly]
Part ID 3680c02 · White
Qty 1
Flags, Banners and Signs
Flag 4 x 1 Wavy [First Wave Right]
Part ID 4495b · Yellow
Qty 1
Bricks Wedged
Wedge Sloped Inverted 6 x 4 with 4 Stud Connections
Part ID 4856b · Medium Nougat
Qty 1
Windows and Doors
Glass for Frame 1 x 6 x 7 with Bow with Medium Nougat Mirror, Pearl Chains, Dark Pink Crystals print
Part ID 65066pr9998 · Medium Azure
Qty 1
Energy Effects
Cloud / Dust with Bar
Part ID 68547 · Opal Trans-Dark Pink
Qty 1
Plates Angled
Wedge Plate 3 x 4 with Stud Notches [Reinforced Underside]
Part ID 90194 · Reddish Brown
Qty 1
Retailer reviews
Summarized retailer review data when available.
Very nice gift for my granddaughter.
Such a cute Lego set my daughter really loved putting together super durable and versatile assembly was easy she needed little help only she’s 5 the quality is great and she was very entertaining to her
This has been a get Lego set. My 7 year old daughter has had a blast with it. She is very destructive, but this product has held up well. A great bang for your buck since there are so many pieces and things you can create. Packaging was great, and you can even put the pieces back in the box when not in use.
My 6-year-old daughters absolutely love this Lego set!, and we're having so much fun building them together. The extra pieces that come with it are perfect, and they provide endless possibilities for building and creating. Watching my daughters imagination come to life as she plays with this set is truly priceless. i recommended this Lego for beginners, because it easy to build, it just need some patience. Overall, it's a fantastic toy that is definitely worth the investment.
I recently built LEGO's Ariel's Crystal Cavern set, and it was an absolute delight! This enchanting set beautifully captures the magical underwater world of Ariel and her friends. The attention to detail is impressive, from the shimmering crystals to the vibrant colors that bring the scene to life. The building experience was enjoyable and engaging, with a good mix of larger and smaller pieces that kept it interesting. The set includes adorable mini-figures of Ariel, Flounder, and Sebastian, each perfectly designed and full of character. I loved how the cavern is not just a static display but features fun elements like hidden treasures and interactive features that add to the playability. One of my favorite aspects is the overall design, which encourages creativity. It’s perfect for both kids and adults, providing hours of imaginative play. Plus, it looks stunning on display! Overall, LEGO's Ariel's Crystal Cavern set is a fantastic addition to any collection. Whether you're a fan of The Little Mermaid or just love building with LEGO, this set is sure to bring joy and inspiration. Highly recommended!
My daughter loves the little mermaid. There are 141 pcs to this set and easy to assemble. They are made sturdy as you get with most all lego brand sets.
I was i was able to show y'all the finished product. But I have a destructive autistic child and this is what we got. However me and her put it together just fine. The pictures were easy to follow and most the time she was doing it on her own. Halfway through she was kinda over it but I expect that from her. But All in all we had a great time and I'm thinking of purchasing more Legos for us to put together.
My little girl loves it so much. Lego always has good quality toys. Disney characters is good for lego starter like my 4 year old. Not to hard for my girl to assembly. Beautiful colors blocks.
Wow! This is such a great toy! Great for little imaginations to create and play. Great value and the pieces aren't small!! She's going to have a great time with this one!!
Beautiful with vibrant colors and detailed peices! Contains 141 pieces some of which are very small. The box reads ages four and up. And I agree. The pieces are simple for young children to build With , set comes with Ariel, Ursula and flounder, As well as many accessories for each. Hours of fun for children and A great way for adults to help their children by joining in on the fun!
Nice playset that encourages storytelling. Easy to assemble and has fun details.
All retailer prices
Current prices, stock and discounts per retailer.
Price context
Lowest, highest and average price for this set.
This context is based on 774 price points across 6 retailers. The chart on the page remains the full interactive source.
Price forecast
Conservative baseline for the next period.
The chance of a further drop is low. The current price is near the lowest measurement.
FAQ & set details
Pieces, year, RRP and retailer coverage.
Quick answers about price, stock and set data.