Very cool
Very nice to build with. The children in my class (10 years old) have had a lot of fun with it.
Retailer prices for 31015 are sorted by the latest lowest price.
Retailer pricesPrice history 31015
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 2 Dutch retailers. The dotted line marks LEGO's recommended retail price.
Source: daily measurement at 2 Dutch retailers, 15 Dec 2025 – 31 May 2026. RRP via LEGO.com.
| Date | Price | Retailer | Stock |
|---|---|---|---|
| €41,75 | Special Bricks | In stock | |
| €41,75 | Special Bricks | In stock | |
| €41,75 | Special Bricks | In stock | |
| €41,75 | Special Bricks | In stock | |
| €41,75 | Special Bricks | In stock | |
| €41,75 | Special Bricks | In stock | |
| €41,75 | Special Bricks | In stock | |
| €41,75 | Special Bricks | In stock | |
| €41,75 | Special Bricks | In stock | |
| €41,75 | Special Bricks | In stock | |
| €41,75 | Special Bricks | In stock | |
| €41,75 | Special Bricks | 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.
31015 by the numbers: price, stock and history.
For LEGO Emerald Express (31015), we track 1 retailer in the Netherlands, with 1 currently in stock. The current lowest price is €41,75. Use price history and stock data to judge whether this is a good time to buy.
Climb aboard for fun with this classic 3-in-1 steam train! Full steam ahead! The exciting and colorful Emerald Express steam train is packed with detail, from the classic funnel to the driver's cab and the bars at the front that push cows out of its way. Moo! When it's time for a change, you can rebuild it into a fast rocket train or a carriage. Combine with additional Emerald Express sets to create an even longer train! 3-in-1 model: rebuilds into a rocket train or a carriage Features chunky wheels, funnel, light, cattle bars and a driver's cab with windows Watch out for passing cows! Train measures over 2" (7cm) high, 3" (8cm) long and 1" (3cm) wide Rocket train measures over 1" (4cm) high, 3" (9cm) long and 1" (3cm) wide Carriage measures over 1" (4cm) high, 2" (6cm) long and 1" (3cm) wide Combine with additional 31015 Emerald Express sets for an even longer train
All about this set
Background, build experience, collector context, and buying notes in one story.
For LEGO Emerald Express (31015), we track 1 retailer in the Netherlands, with 1 currently in stock. The current lowest price is €41,75. Use price history and stock data to judge whether this is a good time to buy.
Climb aboard for fun with this classic 3-in-1 steam train! Full steam ahead! The exciting and colorful Emerald Express steam train is packed with detail, from the classic funnel to the driver's cab and the bars at the front that push cows out of its way. Moo! When it's time for a change, you can rebuild it into a fast rocket train or a carriage. Combine with additional Emerald Express sets to create an even longer train! 3-in-1 model: rebuilds into a rocket train or a carriage Features chunky wheels, funnel, light, cattle bars and a driver's cab with windows Watch out for passing cows! Train measures over 2" (7cm) high, 3" (8cm) long and 1" (3cm) wide Rocket train measures over 1" (4cm) high, 3" (9cm) long and 1" (3cm) wide Carriage measures over 1" (4cm) high, 2" (6cm) long and 1" (3cm) wide Combine with additional 31015 Emerald Express sets for an even longer train
The current lowest price is €41,75 across 1 tracked retailers.
Instructions & specifications
Dimensions, pieces, build steps, and the official PDF building instruction.
Parts inventory
Known set data around pieces and build context.
Plates Round Curved and Dishes
Plate Round 1 x 1 with Solid Stud
Part ID 6141 · Black
Qty 6
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)
Part ID 4032a · Dark Green
Qty 1
Dish 2 x 2 Inverted [Radar]
Part ID 4740 · Black
Qty 1
Plate Round 1 x 1 with Solid Stud
Part ID 6141 · Black · Spare
Qty 2
Wheels and Tyres
Wheel 18 x 8 with Fake Bolts and Deep Spokes with Inner Ring
Part ID 13971 · Light Bluish Gray
Qty 4
Wheel 8 x 6
Part ID 4624 · Light Bluish Gray
Qty 2
Technic Pins
Technic Pin without Friction Ridges Lengthwise
Part ID 3673 · Light Bluish Gray
Qty 4
Technic Pin without Friction Ridges Lengthwise
Part ID 3673 · Light Bluish Gray · Spare
Qty 1
Plates Special
Plate Special 2 x 2 with 2 Pin Holes
Part ID 2817 · Light Bluish Gray
Qty 2
Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring]
Part ID 4081b · Black
Qty 2
Bracket 1 x 2 - 1 x 4 [Rounded Corners]
Part ID 10201 · Black
Qty 1
Plate Special 1 x 2 Side Handle [Free Ends]
Part ID 2540 · Black
Qty 1
Plate 2 x 2 with Towball
Part ID 3731 · Light Bluish Gray
Qty 1
Bracket 2 x 2 - 2 x 2
Part ID 3956 · Black
Qty 1
Plate Special 2 x 2 with Wheel Holders
Part ID 4600 · Black
Qty 1
Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip]
Part ID 61252 · Black
Qty 1
Plate Special 2 x 2 with Towball Socket, Short, Flattened with Holes and Axle Hole in Center
Part ID 63082 · Black
Qty 1
Plate Special 2 x 2 with Groove and Center Stud (Jumper)
Part ID 87580 · Red
Qty 1
Bracket 1 x 2 - 1 x 2 Inverted
Part ID 99780 · Dark Bluish Gray
Qty 1
Bricks
Brick 1 x 1
Part ID 3005 · Dark Green
Qty 2
Brick 1 x 2 without Bottom Tube
Part ID 3065 · Trans-Clear
Qty 2
Brick 1 x 2
Part ID 3004 · Light Bluish Gray
Qty 1
Plates
Plate 1 x 2
Part ID 3023 · Black
Qty 2
Plate 1 x 3
Part ID 3623 · Red
Qty 2
Plate 2 x 4
Part ID 3020 · Dark Green
Qty 1
Plate 2 x 3
Part ID 3021 · Dark Bluish Gray
Qty 1
Plate 2 x 2
Part ID 3022 · Dark Bluish Gray
Qty 1
Plate 1 x 4
Part ID 3710 · Dark Green
Qty 1
Plate 2 x 6
Part ID 3795 · Dark Bluish Gray
Qty 1
Plate 2 x 6
Part ID 3795 · Light Bluish Gray
Qty 1
Bricks Round and Cones
Brick Round 2 x 2 with Axle Hole
Part ID 3941 · Dark Green
Qty 2
Cone 2 x 2 x 2, Open Stud
Part ID 3942c · Black
Qty 1
Bricks Sloped
Slope 18° 2 x 1 x 2/3 with 4 Slots / Grate
Part ID 61409 · Dark Bluish Gray
Qty 2
Bricks Curved
Slope Brick Curved 2 x 4 x 2/3 No Studs, with Bottom Tubes
Part ID 88930 · Black
Qty 2
Tiles
Tile 2 x 2 with Groove
Part ID 3068b · Black
Qty 1
Tile 1 x 1 with Groove
Part ID 3070b · Dark Bluish Gray
Qty 1
Tile 1 x 1 with Groove
Part ID 3070b · Dark Bluish Gray · Spare
Qty 1
Tiles Round and Curved
Tile Round 1 x 1
Part ID 98138 · Trans-Yellow
Qty 1
Tile Round 1 x 1
Part ID 98138 · Trans-Yellow · Spare
Qty 1
Retailer reviews
Summarized retailer review data when available.
Very nice to build with. The children in my class (10 years old) have had a lot of fun with it.
My friend's son was very happy with it. Fast service from bol.com.
A small, but so cute, gift to give in between. It's so fun that we're going to buy another one to have a train set too.
My son, now 26 years old, is a collector, especially of Lego. He likes both the technical and all the "regular" special models. So he was very happy with his Christmas present.
It's very fun to play with and, if you actually buy 2 boxes, they can have hours of fun and create many different variations.
This cute locomotive looks great with everything, especially if you buy a second box and build a wagon. Add a few more and you'll have a whole train of wagons with a locomotive that runs through the room :)
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 39 price points across 1 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.