Certain factors drive the value of retro LEGO sets, it can be their assembling method, time spent on them, expensive pieces, or just general demand in the market.

Amazingly, some retro LEGO sets are worth thousands of dollars and hold a significant place for kids and adults alike even in this digital era.

CHECK OUT: The 5 Most Valuable vintage Star Wars Action Figures.

Some LEGO special editions such as the Taj Mahal or Eiffel Tower were released in limited numbers making them LEGO collectible gold.

5. LEGO Ultimate Collector’s Series Imperial Star Destroyer, $2,400

5 Most Valuable Retro LEGO Sets From The 80s, 90s, and 00s
(Photo: Amazon.com)

The Ultimate Collector’s Series Imperial Star Destroyer is a LEGO set that Star Wars fans will covet. And if any have a spare $2,400 they’ll be able to pick up one of these 3,104-piece sets directly from Amazon.com (so they’re not exactly super-rare yet either).

The high price of this retro LEGO set has everything to do with the high demand for Star Wars collectibles.

So, whether fans are collecting to complete their Ultimate Star Wars ships set, or as a future investment, picking up this set will be a priority.

4. LEGO Airport Shuttle, $2,484

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The LEGO Airport Shuttle set was popular amongst 90’s kids, with its cool monorail and battery-powered train.

Back in the 80s and 90s, this was in demand and one of the most expensive LEGO sets. Now it’s a vintage LEGO set, and the high price continues. At its peak, this set has sold for $2,484 in mint condition.

CHECK OUT: The Rare LEGO Minifigures That Are Worth Thousands Of Dollars Today

3. LEGO King’s Castle, $2,600

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LEGO King’s Castle is a top seller amongst LEGO collectors. Perfect for those interested in the era of Kings, Queens, Knights, or even Game of Thrones and Vikings fans.

If you’ve got a mint condition boxed 1984 King’s Castle you could be in line for a King’s bounty. Its highest selling price was $2,600, which makes it the third most valuable retro LEGO set on this list. 

The set comes with mini-figures, including a King and his soldiers. There’s also a throne, a moveable staircase, catapults, and other weapons.

CHECK OUT: The Most Expensive LEGO Sets Ever, From Tauntauns To Turtles

2. LEGO Taj Mahal, First Edition, $3,864

5 Most Valuable Retro LEGO Sets From The 80s, 90s, and 00s
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The Taj Mahal first edition was a limited LEGO set, and for a while, it was one of the most valuable retro LEGO sets available:

The highest price the LEGO Taj Mahal First Edition sold for was $3,864. Sadly, for LEGO collectors who paid incredible prices for these such sets, values plummeted when LEGO re-released a similar model.

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You can now pick up the re-release for around $660 on Amazon.com (ouch).

The set features many details, including sweeping arches, balconies, and arched windows. It is a perfect imitation of Mughal architecture from India. Its 5,923 pieces make the First Edition or the re-release a great display piece for the home or office.

1. LEGO Ultimate Collector’s Series Millennium, First Edition, $15,000

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The highest price paid for a LEGO Ultimate Collector’s Series Millennium edition set is $15,000, making it the most valuable retro LEGO set on Earth. This set was a first edition and factory sealed.

However, you don’t have to pay thousands for this set, as you can currently pick it up for between $900 and $2,500 depending on the edition, condition, and location.

This set is a true collector item for both Star Wars and Lego fans. Features include exterior detailing, upper and lower laser cannons, landing legs, and four mini-figure cockpits with detachable canopies. With its fine finishing and large size, it is one of the best retro LEGO sets available.