Who doesn’t love Legos, those familiar colored plastic pieces that fit together to build anything? Lego, a Danish toy company, has been making them since 1958. Many of us grew up playing with them as children, and, as parents, have stepped painfully on the stray blocks kids drop on the floor.
Even in this digital era, Legos have held their popularity with both children and adults. The company has continued to innovate its popular build-it-yourself kits, offering limited edition designs and tie-ins to popular movies and TV shows — think "Star Wars" or "Bob the Builder." Legos are now sold in over 140 countries.
Some Lego special editions, such as the Taj Mahal or the Eiffel Tower, were only released for a short time or were discontinued after a few years, and have now become rare and valuable collectors' items. Collectors pay the highest prices for sets in mint condition. A brand-new, sealed Lego set can be worth up to 10 times as much as one that has been opened.
And remember, values can fluctuate pretty fast in the Lego market. In 2016, the Ultimate Collector's Millennium Falcon was worth nearly $4,000, but now it's worth significantly less than that. These are the most expensive Lego sets you can buy — if you can find them.