The Most Expensive LEGO Sets on StockX

The Success of LEGO 

Created in 1949 by The LEGO Group in Denmark, the interlocking blocks were originally used to create simple toys, such as buildings, cars, objects, and more. After 70 years of innovation and growth, LEGO sets today include a myriad of collaborations and series, ranging from popular franchises like Harry Potter, Star Wars, Disney, and more, vastly expanding the universe of potential builds. 

A key factor in the LEGO Group’s success, however, is the company’s ability to provide buildable sets for people of all ages. There is a huge market for advanced, technical builders, according to our data. Series like LEGO Architecture, Ideas, and Creator fill a niche for advanced builders, and sometimes these sets can include motors, thousands of pieces, and complex instructions. 

But LEGOs aren’t just made for beginner and advanced builders. Collectors have spent big on some of the most coveted and rare LEGO sets. Some keep the sets in the original boxes, so they maintain their value as an investment (and can be resold on StockX), while others opt to unbox them, build, and flex the accomplishment of finished construction. 

With a plethora of movies, video games, and amusement parks to support the LEGO brand, rare and expensive LEGO sets are harder to come by. StockX carries an assortment of the most expensive LEGO sets on the market. 

Here are our top 10 most expensive LEGO sets on StockX: 

LEGO The Simpsons The Kwik-E Mart Set 

For decades, the Simpsons has been a classic comedy of American animation, with major success outside of the United States as well. One of the most iconic LEGO sets inspired by the show is The Kwik-E Mart, a gas station copyright-friendly imitation of a 7-Eleven. The LEGO Kwik-E Mart Set brings the gas station to life with a model of the store, and comes with minifigures of popular Simpsons characters like Bart, Marge, and Homer. Despite being released in 2015, the set continues to garner consumer interest. According to our data, the set trades for $430 on average, over double the retail price of $200. The Simpsons Kwik-E Mart Set is one of many LEGO sets from the popular franchise, but the only one that made our top 10. 

LEGO Harry Potter Diagon Alley Set 

For all of the Harry Potter movies’ striking imagery, Diagon Alley is one of the most recognizable. In the films, Diagon Alley, quite literally, has a magical aura to it, playing into the fictional world of wizards beloved by generations. The LEGO Harry Potter Diagon Alley Set pays respect to the intricacies of the original location, evident in the over 5,000 pieces that comprise the set. Filmed in Leadenhall Market in London for the movies, the Diagon Alley LEGO set captures the elaborate details of the architecture in the market. Since its release in 2020, the Diagon Alley set has sold above retail, according to StockX data. With an average sell price of $462, or $62 above retail, fans of the LEGO Harry Potter Diagon Alley set can still capitalize on a competitive price point compared to other sets on this list that sell way above retail. 

LEGO Architecture Colosseum Set 

For nearly two millennia, the Colosseum in Rome has been admired worldwide for its detailed and complex architecture, which exemplifies the craftsmanship of the time. It’s a marvel of architecture even today, and LEGO paid tribute to the incredible structure. The LEGO Architecture line honors some of the world’s most renowned buildings and structures, often with a higher degree of intricacy and accuracy. Tailored for more advanced builders, the LEGO Architecture Colosseum Set highlights the perfect imperfections of the Colosseum today. Mother Nature has taken its toll on the Colosseum, and the LEGO set depicts those details. Released in 2020 for a retail price of $550, the LEGO Colosseum Set currently trades for an average of $469 on StockX. So while it ranks among the most expensive, it is actually a below-retail bargain. 

LEGO Creator Brick Bank Set 

Like other LEGO Creator sets, the Brick Bank offers more advanced builders a challenge. The 2,300 piece LEGO Creator Brick Bank Set measures over 10 inches high, wide, and deep – a great model to display with other Creator sets. It also has the distinction of being one of the few coveted LEGO sets on this list selling for a massive price premium. The LEGO Creator Brick Bank Set released in 2016 for a retail price of $170. Five years later, the resale value on StockX averages around $380, or nearly 3x retail, making it the 6th most expensive LEGO set on StockX

LEGO Star Wars Death Star Set 

For over a decade, the LEGO Star Wars Death Star Set has earned its reputation as one of the more complex Star Wars LEGO sets on the market. The 3,800 piece set perfectly conveys the sheer size of the Death Star, which has been revered by Star Wars fans for decades. According to our data, the LEGO Star Wars Death Star Set is one of the most expensive LEGO sets on StockX, and the second LEGO Star Wars set to make this top 10 list. Released in 2008 at a retail price of $400, the LEGO Star Wars Death Star Set sells for an average price of $488. Despite being a decade old, the set still sells around the retail price point, which is great for old and new collectors alike looking to cop at a great deal.

LEGO Technic Porsche 911 GT3 RS Set 

Crafted to perfectly detail the Porsche 911, the LEGO Technic Porsche 911 GT3 RS is another highly detailed sports car from LEGO’s Technic series. Like other cars in the Technic line, the Porsche 911 GT3 RS is geared (pun intended) towards car enthusiasts and collectors. The 2,704 piece set is modeled at a 1:8 scale of the actual vehicle. The LEGO Porsche 911 GT3 RS is the only LEGO Technic set in our top 10 most expensive LEGO sets, but other cars like the Technic Lamborghini Sian FKP 37 and Ferrari F40 don’t fall far behind, showing just how valued these sports car models are for collectors. According to our data, the LEGO Technic Porsche 911 GT3 RS sells for an average price of around $550, or $250 above retail. The 52-week low never dipped below $500, and the car has consistently sold in the mid $500 range for the past 12 months. 

LEGO Star Wars Imperial Star Destroyer Ultimate Collector Series Set 

Inspired by the movie that started it all, the LEGO Star Wars Imperial Star Destroyer Ultimate Collector Set is a highly detailed, advanced builder set based on the Star Destroyer in Star Wars: A New Hope. This 4,700 piece behemoth is one of the largest Star Wars sets in the LEGO catalog, and is the most expensive Star Wars LEGO set on StockX. The Star Destroyer Ultimate Collector Series Set is also the most expensive LEGO set on StockX that sells for below the retail price, which presents a great opportunity for collectors. The Star Wars Imperial Star Destroyer retailed at $700, but our data shows a current average resale price of $562. It also ranks as the second highest-traded LEGO set in this top 10 list, which is a good indication that fans are capitalizing on the below-retail prices. 

LEGO Ghostbusters Firehouse Headquarters Set 75827

The LEGO Ghostbusters Firehouse Headquarters Set is one of the more interactive and playful sets on this list. The 4,600 piece set opens up, adding to an abundance of display and play opportunities inside the firehouse. This Ghostbusters set comes with 12 minifigures, including the ghostbusters themselves. According to our data, the Ghostbusters Firehouse Headquarters Set is the third most expensive LEGO set on StockX, selling at an average price of $562. With a retail price of $350, the Ghostbusters Firehouse Headquarters set boasts a healthy price premium of over 50%.

LEGO Ninjago City Set 

Reliving the LEGO Ninjago Movie has gotten a whole easier with the Ninjago City Set, a retired LEGO set released in conjunction with the movie in 2017. The highly detailed set is the second most expensive LEGO set on StockX, selling at an ominous average price of $666, or more than double the retail price of $300. Like others on this list, the 4,800 piece set is elaborate and intricate, outfitted with elevators, secret rooms, movie posters, restaurants, and a whole lot more. Because the LEGO Ninjago City Set is retired, the deadstock sets left in circulation resell way above retail, a trend that will likely continue as time goes on. 

LEGO Star Wars Millennium Falcon Ultimate Collector Series Set 

The most expensive LEGO set on StockX is the Star Wars Millennium Falcon Ultimate Collector Series Set, arguably the most recognizable ship in the Star Wars universe. Since its release in 2018, fans have been able to build the ship that, in the famous and head-scratching words on Han Solo, “made the kessel run in less than 12 Parsecs.” (The fact that a Parsec is a unit of distance measurement made this phrase practically nonsense until it was finally cleared up in 2018’s Solo.) The 7,500 piece set makes it one of the biggest LEGO sets made to date. Its massive size is a tribute to the Star Wars franchise that has captivated millions around the world for decades. In addition to being the most expensive LEGO set on StockX, it is also the highest traded set on this list, indicating dedicated fans are doing whatever they can to get their hands on this collector’s item. Luckily, the Millennium Falcon Ultimate Collector Series Set has a resale value of around $850, just $50 above retail. Collectors itching to add the Millennium Falcon to their collection can do so without spending too much above retail. It’s only fitting that the most expensive set on StockX is also one of the biggest sets in LEGO history, and dedicated to such a beloved franchise.