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Which LEGO sets are the best investment? What 3,000 retired sets tell us

Updated 2026-10-24 · 6 min read · By the BrickStats team

Ask ten collectors which LEGO sets make good investments and you will hear the same rules: buy Star Wars, buy big, buy Ultimate Collector Series, buy minifigure-heavy sets. Some of those hold up in the data. Some don’t.

We took the 3,064 sets in the BrickStats catalogue that retired between 2016 and 2024 and have both a retail price and a current sealed value, and asked one question of each: what is it worth today as a multiple of its retail price? Figures are from 23 October 2026, in US dollars.

How retired LEGO sets have performed overall

Across all 3,064 sets, the median sealed value is 1.63× retail. That number hides a wide spread, so it’s worth looking at the whole distribution: a third of sets have at least doubled, while about one in seven is worth less now than it cost in a store.

Time is part of it. A set that retired in 2016 has had eight more years to appreciate than one that retired in 2024. Our retirement guide breaks the multiple down by years since retirement: 1.32× after one year, 1.67× after five, 2.5× after ten or more.

Which LEGO themes are the best investment?

A few patterns are worth calling out:

• Original themes with a loyal adult following do very well. Ninjago has been running since 2011, and its big temples and city sets are bought by adults as much as children. 81% of retired Ninjago sets are now worth at least 1.5× retail.
• Small, cheap, collectible formats punch above their price. Speed Champions and BrickHeadz sets cost $10–25, are bought in runs, and disappear fast. In percentage terms they lead; in dollars, each one gains only a little.
• Ideas sets are fan-designed one-offs. No sequel replaces them, which may be why they hold up (2.05×).
• Star Wars is strong but crowded. It has the most retired sets of any theme and a 1.83× median, but only 63% reach 1.5×. LEGO re-releases popular ships, which caps some of them.
• Play-first and accessory lines lag. Friends, Super Mario and Gear (keyrings, bags, stationery) sit at or near retail.

Licensed vs original themes

Licensed sets (Star Wars, Marvel, Harry Potter, Disney and so on) have a median of 1.70×, against 1.63× for LEGO’s own themes (City, Ninjago, Technic, Icons, Ideas, Friends and others). Within each group the spread is far larger than the gap between them: Ninjago and Friends are both original, and Disney and DC are both licensed. Pick a specific theme with a track record, not a category.

Big sets vs small sets

Small sets have the best percentage returns, but that is misleading on its own: a $15 set at 1.75× is a $11 gain before fees and postage, which can easily cost more than that to sell. Big sets give smaller multiples on far bigger amounts, they are cheaper to store per dollar, and most of the large retired sets in our data have done well. 64 of the 72 sets over $250 are worth more than retail today.

Does price per piece matter?

Yes, modestly. Price per piece is retail price divided by piece count, a rough measure of how much LEGO you get for the money. Sets that were good value at launch tend to stay attractive to buyers after retirement:

What about minifigures? Minifigure-heavy sets are often said to be safer, because figures can be sold on their own. In our data, the number of minifigures in a set showed no clear effect on its multiple (1.55× to 1.64× across groups). What matters is which figures: a set with an exclusive character can outrun everything else, but a set with five common soldiers doesn’t.

The sets that didn’t work

The other side matters just as much. These large sets are worth little more than their retail price today, in some cases after years of waiting:

What do they have in common? Tree House (21318) and R2-D2™ (75308) were on sale for years and often discounted, so collectors had every chance to stock up, and plenty of sealed copies are likely still around. A set everyone stockpiled is a set everyone will be selling.

Buy at a discount, before retirement

You can’t control what a set does after it retires. You can control what you pay. A set bought at 25% off retail that ends up at the median 1.63× is a 117% gain instead of 63%. That is a bigger difference than the gap between the best and worst themes above.

1. Watch sets you want long before they retire. Discounts on large sets are most common in sales periods and late in a set’s life.
2. Use the last-chance list as a deadline, not a buy signal. By the time a set is listed as retiring soon, discounts usually dry up. See the current retiring list.
3. Set a target price and wait for it. A price alert does this for you: name the price you would pay, and get notified when the market reaches it.
4. Keep boxes sealed and undamaged. Used copies are worth a median of 29% of sealed ones; a dented box costs you most of the premium.
5. Count the costs to sell. Marketplace fees, payment fees and shipping often take 10–20% of the sale price.

A worked example: what it looks like on real sets

Colosseum (10276) launched at $550 in November 2020 and retired three years later. Bought at retail, it is worth 3.09× today. Galaxy Explorer (10497), a much-loved revival of a classic space set, launched at $100 and retired after sixteen months; it is worth 1.27× today. Both were popular. One was a huge, expensive display piece with no substitute. The other was easy to buy in quantity at the time.