Your wallet just did a double-take. The LEGO Mermaid Roller Coaster Ride (42703) has landed, and it’s asking for ₹10,999. That’s a significant chunk of change for what looks like a theme park attraction designed for smaller hands. Let’s see if this aquatic adventure is worth the entry fee, or if you’re better off saving your cash for a more substantial build.
This set brings a playful underwater amusement park to life. We get a roller coaster track that loops and dives, complete with a charming mermaid-themed car. The build includes several minifigures, some aquatic creatures, and various decorative elements that aim to capture the magic of an underwater fairground. It’s clearly targeted at a younger demographic, leaning heavily into the fantasy and play aspects rather than complex building techniques or a display-worthy aesthetic.
The roller coaster itself is the star. The track pieces are standard LEGO elements, allowing for some flexibility in how you assemble the ride. The little mermaid car looks fun, and the inclusion of spinning elements and a small drop section promises a decent play experience. There are also some accessory builds, like a ticket booth and a small food stand, adding to the overall theme park feel. The minifigures are well-designed, fitting the underwater theme with vibrant colours and accessories.
However, the elephant in the room, or rather the narwhal in the aquarium, is the price. ₹10,999 for 700-ish pieces feels steep, especially when you consider the primary audience. While the play features are good, the build experience itself isn't particularly groundbreaking. The techniques used are straightforward, and the piece count doesn’t translate into a massive or particularly detailed final model. It feels more like a collection of fun play features wrapped around a basic roller coaster track, rather than a complex LEGO creation.
When you compare it to other sets in this price bracket, the value proposition starts to waver. For ₹10,999, you could potentially get a much larger, more intricate set from the Technic or Creator Expert lines, or even a substantial Star Wars or Marvel set. Those builds often offer a more engaging construction process and a more impressive final display piece, even if they lack the immediate playability of a dedicated amusement park ride. This Mermaid Roller Coaster feels like it’s priced for the novelty and the theme rather than the sheer volume or complexity of bricks.
The build experience is enjoyable for its target audience, but for an adult collector or even an older child looking for a challenge, it might feel a bit simplistic. The instructions are clear, and putting it together is a breeze, but it lacks those moments of "aha!" construction that make larger sets so satisfying. It’s more about the end result as a plaything than the journey of building it.
If you’re buying this for a child who loves mermaids and theme parks, and the price isn't a major concern, they will likely have a blast with it. The play features are solid, and the mermaid theme is executed with LEGO’s usual charm. But for the seasoned LEGO fan, particularly those who are price-conscious and value intricate builds or display potential, it’s harder to justify the ₹10,999 price tag. It sits in that awkward middle ground where it’s too expensive for a casual impulse buy for a child, yet perhaps not substantial enough for a serious collector.
MyBrickHouse has it listed for ₹10,999, though it may be out of stock. Toycra also has it for ₹10,999. Use code ABHINAV12 for 12% off on orders above ₹500 at Toycra. That’s enough for 23kg of Amul butter, or roughly two months of your favourite streaming service. MyBrickHouse | Toycra.
Ultimately, the LEGO Mermaid Roller Coaster Ride (42703) is a fun playset that suffers from a high price point. While the theme and play features are appealing, the build experience and piece count don't quite justify the cost for many adult fans. It’s a set that’s likely to be a hit with its intended younger audience, but for everyone else, it’s probably best to wait for a sale or a significant price drop. This is definitely not an impulse buy at its current retail. On that bombshell, it's time to say goodbye. I'll see you on the next one. Bubyee.
Verdict: WAIT. Good set, but the price will drop.

WAIT
🎉 Exclusive deal: ABHINAV12 — 12% off at Toycra. Min ₹500.