LEGO as an Investment: Does It Work?
LEGO investing means buying sealed sets, usually before or around the time LEGO retires them, and selling later on the secondary market for more than you paid. For some sets it has worked. A widely reported academic study found that retired sealed sets gained roughly 11 percent a year on average over a sample ending in 2015. But averages hide wide swings, many sets go nowhere, and storage, fees, shipping and condition eat into results. This guide covers what the research says, what drives price gains, what it costs, and what can go wrong. It is information, not financial advice.
What the research actually says
The study most people cite comes from economists at HSE University in Russia. The paper, titled "Lego: The Toy of Smart Investors," appeared in the journal Research in International Business and Finance. The authors collected data on 2,322 sealed LEGO sets, drawing on primary retail prices and online auction results covering 1987 to 2015.
Their headline result: sealed retired sets produced an average return of at least 11 percent a year, or about 8 percent after inflation. The authors compared that to returns on large stocks, bonds and gold over the same sample period and found LEGO ahead of those benchmarks. They also found that returns varied a great deal from set to set, and that small and large sets tended to do better than medium-sized ones.
Four caveats belong next to that number.
It is an average across sets that were chosen by the data, not by you. Averages include a few big winners. The typical set did not necessarily match the average.
The sample ends in 2015. Markets, fees and platforms have changed. Press coverage quoting the lead author noted the sample period, and later commentary has pointed out that gold has since risen sharply, so the comparison to gold no longer holds the same way.
Returns in the study are gross of many real-world costs. Selling fees, shipping, storage and time are not the same as a price index.
Past performance does not predict the future. The authors themselves cautioned that this is not something to rely on for retirement and that participants need specialist knowledge.
You can read the summary on HSE's own news site, and the paper is available through the journal. Check the original before quoting numbers.
What drives price gains
Sets that appreciate tend to share a few traits. None of them is a guarantee.
- Retirement. LEGO stops producing a set after a run, and supply becomes fixed. Price trackers such as BrickEconomy describe a pattern of prices often rising after retirement, with a stronger phase over the following months and years. That is a pattern, not a rule.
- Strong theme demand. Licensed themes with devoted fan bases, such as Star Wars, and adult-focused lines have held collector attention. Themes with limited audiences do less.
- Display appeal and completeness. Large display sets and sets that complete a line tend to attract buyers.
- Exclusive pieces. Sets with minifigures or parts not found elsewhere can command higher prices.
- Small production runs. Sets sold only in limited channels or for a short window have fewer copies to compete.
- Condition. A sealed box with sharp corners and no crush or tape damage sells for more than a tired box. Collectors pay for the box as much as the bricks.
Our guide Retired LEGO Sets: Which Ones Climb goes through which sets and themes have done well. This guide stays on how the market works.
Why most sets do not appreciate
It is easy to look at a famous example and assume the whole category rises. Several forces work the other way.
Supply is large. LEGO makes sets in big quantities for many of its lines. A set that sold in huge numbers and sits in attics around the world is not scarce.
Retail discounts cap early prices. While a set is in production, retailers discount it, and prices stay near or below the recommended price. Buyers looking at the market for a retired set compare the price to what they could have paid on sale.
Reissues and similar sets. LEGO sometimes brings back popular models or releases similar ones, which can cut demand for a retired version.
Demand moves. Themes fall out of fashion. A set that was hot when it retired can cool.
Costs eat the gain. A set whose listed value rises can look like a strong gain on paper. After a marketplace fee, shipping and the cost of holding it, the net can be small or negative.
Price trackers publish average appreciation figures across thousands of sets and show large differences between themes. Treat those as trend indicators from commercial sites that have an interest in the market, and check sold sales yourself.
What it costs
Investment returns on paper ignore costs that are real. Plan for each of these.
| Cost | What it looks like |
|---|---|
| Purchase price | Retail or discounted price at the start |
| Storage | Shelf space, climate control, protection from moisture, light and crushing |
| Insurance | Optional but sensible for a large collection |
| Selling fees | Marketplace and payment fees, which can be a meaningful share of the sale. Check the current schedule on the platform you use |
| Shipping | Large boxes are bulky, and heavy sets cost real money to ship and to insure |
| Time and capital | Money tied up for years that could have been earning elsewhere |
| Returns and damage claims | Crushed boxes in transit |
Shipping is the one people underestimate. Many of the highest-value sets are also the biggest and heaviest, and shipping a large box safely is not cheap. Our guide Where to Sell LEGO covers the selling side, including which channels fit which sets.
The real risks
Be specific about what can go wrong.
- Price risk. Retired set prices can go down as well as up. There is no floor.
- Liquidity risk. Not every set sells quickly. A set that is worth a lot on a price tracker may take time to find a buyer at that price.
- Condition risk. Box damage, moisture, sun fading or a smell can cut value sharply. Sealed sets look simple but the packaging is cardboard.
- Authenticity and resealing risk. Resealed or tampered boxes exist. Buying from people you can see and question lowers the risk.
- Concentration risk. Putting a lot of money into one hobby market means a shift in that market hits everything you own.
- Information risk. Price trackers are estimates built from sales data, and the numbers can lag or differ between sources.
What the number does and does not tell you
An average annual return sounds precise, but it is built from very different outcomes. The study's own description includes sets that lost value and sets that gained several times over, and the average sits between them. If you picked sets at random, you would expect a spread of results, and your outcome would depend on which ones you happened to hold.
It also matters how the study measured value. It relied on sales data from auctions and retail records over nearly three decades, which means it reflects what sold, not what sat unsold. Sets that never found a buyer at a good price do not show up as sales. That is a normal limit of any study built on completed transactions, and it nudges averages upward.
Finally, the market has changed since the data ended. The secondary market is larger and more organized, with price trackers, dedicated resale platforms and more buyers who treat sealed sets as assets. A bigger, better-informed market can narrow the easy gains, because more people are looking for the same sets before they retire.
How people try to approach it
None of this is advice, but these are the practices that careful collectors describe.
- Buy what you would also enjoy. If the market turns, you still have something you like.
- Look at sold prices, not asking prices. Completed sales tell you what buyers paid.
- Compare your cost to the likely net after fees and shipping. If the numbers only work on paper, they do not work.
- Spread across several sets instead of one. The research itself shows how wide the range of outcomes is.
- Keep boxes dry, flat and out of sun.
- Write down what you paid and when, so you can see your real return later.
Seeing collectibles live
If you want to see sealed collectibles and toys before you pay, ShopBidz runs live selling where you can ask a seller to turn a box in the light and show the seams and corners. Collector Of Goodies and Six2Six are two collectibles and toys sellers you can watch live. Asking to see the box edges and seal before a bid is a simple habit that guards against condition surprises. Our guide Where to Sell Funko Pops covers a related collectibles market with similar condition questions.
Common mistakes
- Treating the study average as a promise. The 11 percent figure is a historical average over a sample of sets and years, not what the next set will do.
- Ignoring selling and shipping costs. A paper gain can disappear after fees and freight.
- Buying the wrong end of a theme. Popular lines still contain plenty of sets that never climbed.
- Damaging the box. Storage in a damp basement or a hot attic can wipe out the premium.
- Buying late. After a set has already risen on hype, the price may include most of the move.
Bottom line
LEGO has worked as a collectible investment for some sets, and one academic study of sealed retired sets from 1987 to 2015 found average returns of about 11 percent a year. The result comes with real limits: it is an average across a wide range, the sample ended in 2015, and storage, selling fees, shipping and condition reduce what you keep. Many sets do not appreciate, and nothing guarantees future prices. If you buy, buy sets you like, check sold prices, count the costs, and keep boxes in good condition. This is information, not financial advice.