Conforming and of good quality
Complies with the description. Expected quality met.
1 / 9
Available now at 18 retailers
LEGO Train Tunnel and Tracks Expansion Set 10425
Lowest price
Updated now
€
13
,99
RRP €13,99
Lowest measured
€13,99
Now
€13,99
- Buy safely from the Official LEGO Store
LEGO Official Store
lego.com
View at Alternate
€13,99
Also available at 18 retailers
Compare all retailers
Set number
10425
Theme
DUPLO
Year
2025
Pieces
20
Age
2+
Subtheme
Trains
DUPLO
10425 · 20 pieces
Theme
1 / 9
ESC to close
Compare 18 retailers.
Retailer prices for 10425 are sorted by the latest lowest price.
Retailer prices
#
Retailer
Stock
Shipping
Last seen
Discount
Total
01
Alternate
alternate.nl
In stock
Unknown
shipping
31 May
updated
€13,99
02
Kitstore
Kitstore
kitstore.nl
In stock
Unknown
shipping
31 May
updated
€15,04
€19,99
03
SpeelGoedNL
speelgoednl.nl
In stock
Unknown
shipping
31 May
updated
€15,95
€19,99
04
De Kinderplaneet
dekinderplaneet.be
In stock
Unknown
shipping
31 May
updated
€16,95
€19,99
05
MisterBricks
misterbricks.nl
In stock
Unknown
shipping
31 May
updated
€16,95
€19,99
06
2T Toys
2ttoys.nl
In stock
Unknown
shipping
31 May
updated
€16,99
€19,99
07
Supra Bazar
suprabazar.be
In stock
Unknown
shipping
31 May
updated
€16,99
€19,99
08
BRICKshop
brickshop.nl
In stock
Unknown
shipping
31 May
updated
€16,99
€19,99
09
Coppens Warenhuis
coppenswarenhuis.nl
In stock
Unknown
shipping
31 May
updated
€17,09
10
Conrad
conrad.nl
In stock
Unknown
shipping
31 May
updated
€17,99
18 retailers compared
Price history 10425
Full price history at a glance.
We check Dutch retailers every day. This graph shows the full daily-low price series we have for this set.
Lowest yet
€13,99
14 Dec 2025 · Alternate
Peak price
€36,35
12 Jan 2026 · Conrad
Average
€18,82
35% above RRP
RRP
€13,99
reference price
Daily lowest price tracked across 35 Dutch retailers. The dotted line marks LEGO's recommended retail price.
Source: daily measurement at 35 Dutch retailers, 13 Dec 2025 – 31 May 2026. RRP via LEGO.com.
| Date | Price | Retailer | Stock |
|---|---|---|---|
| €16,99 | 2T Toys | In stock | |
| €16,99 | Supra Bazar | In stock | |
| €19,95 | Blokkenpiloot | In stock | |
| €15,04 | Kitstore | In stock | |
| €16,95 | De Kinderplaneet | In stock | |
| €19,99 | Unieke Bricks | In stock | |
| €15,95 | SpeelGoedNL | In stock | |
| €16,99 | BRICKshop | In stock | |
| €17,09 | Coppens Warenhuis | In stock | |
| €17,99 | Conrad | In stock | |
| €13,99 | Alternate | In stock | |
| €19,99 | LEGO.com | In stock |
- BricksDeal Forecast
Beta
Price will likely hold steady.
Calibrated forecast based on historical pricing, seasonal patterns and retailer behavior. Tuned conservatively: rather cautious than optimistic.
Drop likelihood
Next 60 days
28%
Low · ±6%
Low likelihood of further drops. Current price is near the all-time low.
Expected low
€13,57
within 60 days
Vs. today
-€0,42
3% saving
Projected price path
Actual price
Predicted path
80% interval
Price position +++
Near lowest yet
We compare current price against RRP and lowest tracked price.
Retailer pressure ++
18 retailers compared
More retailers usually means more competition on the lowest price.
Stock +
18 in stock
Availability lowers the chance of a scarcity premium.
History base
2137 points
The v1 migration uses this as a transparent baseline.
Based on 2137 price points · 18 retailers · transparent baseline
How this model works
About this set
Context for 10425, prices and availability.
For LEGO Train Tunnel and Tracks Expansion Set (10425), we track 18 retailers in the Netherlands, with 18 currently in stock. The current lowest price is €13,99. Use price history and stock data to judge whether this is a good time to buy.
Extend toddlers’ train adventures with the Train Tunnel and Tracks Expansion Set (10425) toy for toddlers. Preschool kids aged 2+ grow their learning adventures as they add a tunnel and extra track to their LEGO® DUPLO® Town interactive toy train sets (10427 and 10428, sold separately). This creative building toy comes with a tunnel build and a 10-piece track, including a funnel element and a 2-way points switch so toddlers can change their train’s direction of travel. The action brick lights up the dark tunnel when activated by the interactive train from sets 10427 and 10428. This kids’ learning toy encourages a toddler’s development. By extending the train track through the toy tunnel, preschoolers learn spatial awareness. Using problem-solving skills to combine the toy track and prediction skills to determine the train’s destination, toddlers develop patience and focus as they discover the many routes they can make.
Read more
All about this set
Background, build experience, collector context, and buying notes in one story.
For LEGO Train Tunnel and Tracks Expansion Set (10425), we track 18 retailers in the Netherlands, with 18 currently in stock. The current lowest price is €13,99. Use price history and stock data to judge whether this is a good time to buy.
Extend toddlers’ train adventures with the Train Tunnel and Tracks Expansion Set (10425) toy for toddlers. Preschool kids aged 2+ grow their learning adventures as they add a tunnel and extra track to their LEGO® DUPLO® Town interactive toy train sets (10427 and 10428, sold separately). This creative building toy comes with a tunnel build and a 10-piece track, including a funnel element and a 2-way points switch so toddlers can change their train’s direction of travel. The action brick lights up the dark tunnel when activated by the interactive train from sets 10427 and 10428. This kids’ learning toy encourages a toddler’s development. By extending the train track through the toy tunnel, preschoolers learn spatial awareness. Using problem-solving skills to combine the toy track and prediction skills to determine the train’s destination, toddlers develop patience and focus as they discover the many routes they can make.
Buying context
The current lowest price is €13,99 across 18 tracked retailers.
Reference
Instructions & specifications
Dimensions, pieces, build steps, and the official PDF building instruction.
Set number
10425
Theme
DUPLO
Subtheme
Trains
Year
2025
Pieces
20
Age
2+
RRP
€19,99
Building instructions
Train Tunnel and Tracks Expansion Set instruction manual
Train Tunnel and Tracks Expansion Set instruction manual (CS)
Train Tunnel and Tracks Expansion Set instruction manual (DE)
Train Tunnel and Tracks Expansion Set instruction manual (ES)
Train Tunnel and Tracks Expansion Set instruction manual (ET)
Train Tunnel and Tracks Expansion Set instruction manual (FR)
Train Tunnel and Tracks Expansion Set instruction manual (HU)
Train Tunnel and Tracks Expansion Set instruction manual (IT)
Train Tunnel and Tracks Expansion Set instruction manual (LT)
Train Tunnel and Tracks Expansion Set instruction manual (LV)
Train Tunnel and Tracks Expansion Set instruction manual (PL)
Train Tunnel and Tracks Expansion Set instruction manual (PT)
Train Tunnel and Tracks Expansion Set instruction manual (RO)
Train Tunnel and Tracks Expansion Set instruction manual (SK)
Parts
Parts inventory
Known set data around pieces and build context.
20
Parts breakdown
![Duplo Train Track 4 x 8 Curved [Short] (6378)](https://images.bricksdeal.com/parts/6378-71-6190216962b5.jpg)
Duplo Train Track 4 x 8 Curved [Short]
Part ID 6378 · Light Bluish Gray
Qty 10
Duplo Train Action Plate with Lamp Print, Light Action
Part ID 35962pr0006 · White
Qty 1
Duplo Train Track, End of the Line Rail Stop
Part ID 35967 · Reddish Orange
Qty 1
Duplo Brick 1 x 3 x 2 Triangle with Train, Orange Border print
Part ID 42025pr0005 · White
Qty 1
Duplo Train Tracks, Ramp
Part ID 4785 · Yellowish Green
Qty 1
Duplo Train Track Switcher with Red Switch
Part ID 51560 · Light Bluish Gray
Qty 1
Duplo Train Track, Straight with 2 x 8 Plate on Both Sides
Part ID 5370 · Yellowish Green
Qty 1
Duplo Arch 4 x 10 x 7
Part ID 5557 · Dark Bluish Gray
Qty 1
Duplo Plant, Flower with 1 Top Stud
Part ID 6510 · Bright Green
Qty 1
Duplo Plant, Flower with 1 Top Studs
Part ID 84195 · Medium Lavender
Qty 1
Duplo Brick 2 x 4 Curved Top
Part ID 98223 · Bright Green
Qty 1
Duplo, Quatro and Primo
Duplo Train Track 4 x 8 Curved [Short]
Part ID 6378 · Light Bluish Gray
Qty 10
Duplo Train Action Plate with Lamp Print, Light Action
Part ID 35962pr0006 · White
Qty 1
Duplo Train Track, End of the Line Rail Stop
Part ID 35967 · Reddish Orange
Qty 1
Duplo Brick 1 x 3 x 2 Triangle with Train, Orange Border print
Part ID 42025pr0005 · White
Qty 1
Duplo Train Tracks, Ramp
Part ID 4785 · Yellowish Green
Qty 1
Duplo Train Track Switcher with Red Switch
Part ID 51560 · Light Bluish Gray
Qty 1
Duplo Train Track, Straight with 2 x 8 Plate on Both Sides
Part ID 5370 · Yellowish Green
Qty 1
Duplo Arch 4 x 10 x 7
Part ID 5557 · Dark Bluish Gray
Qty 1
Duplo Plant, Flower with 1 Top Stud
Part ID 6510 · Bright Green
Qty 1
Duplo Plant, Flower with 1 Top Studs
Part ID 84195 · Medium Lavender
Qty 1
Duplo Brick 2 x 4 Curved Top
Part ID 98223 · Bright Green
Qty 1
Reviews
Retailer reviews
Summarized retailer review data when available.
Average rating
4.9
/ 5
Reviews
22
retailer data
Amazing
Amazing quality and great fun. My son loves this set and has the other items from this range.
We even bought two sets!
Due to the reduced price here, we bought two sets to have the complete tunnel. It is also a cheap way to have extra railway and switch pieces! So now we can build a super train track, which my 2-year-old son loves!
Really cool.
A nice addition to regular tracks. Even though the tunnel is narrow, it makes it even more interesting for our son to let the trains run through. Absolutely wonderful for afterwards.
Many parts
A set with a relatively large number of track pieces
Another good Duplo set
You can't go wrong with Duplo. This set has such a fun design with cute little characters, and my toddler has already come up with some hilarious combinations. The colors are bright, the quality is great as always, and it is really easy to build, even for small hands. It has a decent amount of pieces for the size, so there is plenty of play value, and it mixes well with our other sets. Good value for money and easy to store too.
Very beautiful, nice colors
As always, LEGO delivers on its promises.
Great expansion set – makes the Duplo track even more exciting!
A truly beautiful addition to the Duplo railway world. The switches are easy to use and require very little effort – our two-year-old manages them perfectly. The tunnel is stable and visually appealing. I bought the set twice in order to build a "real" tunnel – it is definitely worth it! Everything fits perfectly with the existing Duplo tracks and provides even more fun and variety.
Duplo
Nice Duplo set.
A toy that will resonate deeply with children who love vehicles.
This LEGO set is perfect for children who love vehicles. The parts are large and easy to assemble, and they can be combined in many different ways, which encourages creativity. Adults also find this set very engaging.
Great gift
Bought as a birthday gift and he loved it. Such a versatile toy that encourages imaginative play.
Fun
Fun!
Fun and easy to use
I was so impressed that it was simple enough for my 4-year-old to put together without my help. Only downside is that there isn’t even a small train-like toy that comes with it. The parts also just lay together so it’s very easy for them to break apart. For now she at least enjoys building it, taking it apart, and building it again.
Great
Great
In summary, I highly recommend the Lego Duplo Trai
Check out what I just got from Influenster 😍🎉🔥 If you want free products too, follow this link: www.influenster.com/r/9909732**Lego Duplo Train Tunnel and Tracks Expansion Set Review** **Rating: ⭐⭐⭐⭐ ⭐ I recently purchased the Lego Duplo Train Tunnel and Tracks Expansion Set for my 2-year-old grandson, and I couldn't be happier with this decision! This set has quickly become one of his favorites, and it's easy to see why. **Quality and Durability:** Lego Duplo bricks are known for their high quality, and this set is no exception. The pieces are sturdy and can withstand the enthusiastic play of little hands, making it perfect for toddlers. **Creative Play:** The train tunnel and tracks offer endless opportunities for imaginative play. My grandson loves setting up the tracks and watching the train zoom through the tunnel. This set encourages creativity and helps develop fine motor skills as he connects the tracks and builds different layouts. **Educational Value:** Playing with this expansion set has also introduced him to basic concepts of cause and effect. He enjoys watching how the train moves when he pushes it, making this not just a toy but a great learning tool as well. **Engagement:** Even at two years old, my grandson can easily manipulate the larger Duplo bricks, allowing him to engage independently or with family members. It sparks joy and keeps him entertained for long periods!
Great time!
We had a ton of fun playing with this Lego set with my Autistic son. It did help him learn patience and really use his imagination in order to build the train tracks more than once. It came with 20 pieces as promise was is suitable for children over two, as advertised.
Great
This set was great easy compatible with blocks when have. Super fun and easy to assemble ny son had fun. It was versatile in use he put his cars and trains on it.
Great!
A nice addition to the train set. Children love it and are very happy with it!
duplo train tunnel
A nice start to the train tunnel, another beautiful extension of the track for the DUPLO train for young children. I ordered two as the front and back, and with a lot of other blocks, they built a mountain, so if you really want a tunnel, it will cost some extra blocks.
Excellent addition to the DUPLO train.
The grandchildren were thrilled with the tunnel for their train.
Compare
All retailer prices
Current prices, stock and discounts per retailer.
18 retailers
· 18 in stock
History
Price context
Lowest, highest and average price for this set.
Lowest yet
€13,99
14 Dec 2025 · Alternate
Peak price
€36,35
12 Jan 2026 · Conrad
Average
€18,82
35% above RRP
RRP
€13,99
reference price
Measurements
This context is based on 2137 price points across 18 retailers. The chart on the page remains the full interactive source.
31 May 2026
€16,99
2T Toys
31 May 2026
€16,99
Supra Bazar
31 May 2026
€19,95
Blokkenpiloot
31 May 2026
€15,04
Kitstore
31 May 2026
€16,95
De Kinderplaneet
Buying moment
Price forecast
Conservative baseline for the next period.
Drop likelihood
28%
The chance of a further drop is low. The current price is near the lowest measurement.
Expected low
€13,57
within 60 days
Vs. today
-€0,42
3% saving
Price position
Near lowest yet
Retailer pressure
18 retailers
Stock
18 in stock
History
2137 points
Questions
FAQ & set details
Pieces, year, RRP and retailer coverage.
Set number
10425
Theme
DUPLO
Subtheme
Trains
Year
2025
Pieces
20
Age
2+
RRP
€19,99
9 questions
What is the lowest price for Train Tunnel and Tracks Expansion Set?
The lowest current price we show is €13,99.
Has LEGO 10425 ever been cheaper?
The lowest historical price was €13,99 on 14 Dec 2025 at Alternate.
How many pieces does LEGO 10425 have?
This set has 20 pieces.
What year is this set from?
LEGO 10425 was released in 2025.
What is the RRP for LEGO 10425?
LEGO's recommended retail price is €19,99.
What is the recommended age for LEGO 10425?
LEGO recommends ages 2+ for this set.
Is LEGO 10425 still available?
Yes, this set is currently available at 18 retailers.
Which retailers do you compare?
We currently compare 18 retailer prices for this set.
How often do you update prices?
We check prices multiple times per day at every tracked retailer and publish the most recent value on this page.
Related sets DUPLO.
Other sets from the same theme for price comparison.
Frequently asked questions
Quick answers about price, stock and set data.
What is the lowest price for Train Tunnel and Tracks Expansion Set?
The lowest current price we show is €13,99.
Has LEGO 10425 ever been cheaper?
The lowest historical price was €13,99 on 14 Dec 2025 at Alternate.
How many pieces does LEGO 10425 have?
This set has 20 pieces.
What year is this set from?
LEGO 10425 was released in 2025.
What is the RRP for LEGO 10425?
LEGO's recommended retail price is €19,99.
What is the recommended age for LEGO 10425?
LEGO recommends ages 2+ for this set.
Is LEGO 10425 still available?
Yes, this set is currently available at 18 retailers.
Which retailers do you compare?
We currently compare 18 retailer prices for this set.
How often do you update prices?
We check prices multiple times per day at every tracked retailer and publish the most recent value on this page.