5 LEGO Sets to Buy Before They Retire in 2026

The UCS Millennium Falcon is the crown jewel of the Star Wars line and widely considered the blue-chip investment of the LEGO world. Released in 2017, it has had an unusually long production run — nearly nine years — which reflects its iconic status but also means enormous quantities have been produced. Don't let that fool you. When this retires in December 2026, demand from collectors, gift buyers and investors will immediately exceed supply.

The precedent is its predecessor — the original UCS Millennium Falcon (10179, released 2007) is now worth over $3,000 AU, representing a 400%+ return from its original RRP. The current version has every reason to follow a similar trajectory. The Star Wars fan base is multigenerational and growing. UCS sets have never been reissued. And the Millennium Falcon is the most recognisable spaceship in pop culture history.

At $1,299.99 AU it's a serious investment — and one of the most expensive sets on this list. Buy it if you've been on the fence — this is your last chance at retail pricing. Prices are already tracking below RRP on some secondary market channels as stock accumulates ahead of the retirement date, but that will reverse sharply once production ends.

This is the most urgent buy on this list. Gringotts retires in July 2026 — just three months away — and is already showing signs of scarcity. In some regions it's selling for $700–$850 AU on secondary markets before it has even officially retired. That kind of pre-retirement premium signals what's coming.

The investment case is exceptionally strong. Thirteen minifigures are included, eleven of which are exclusive to this set. Nearly half the retail price is locked in exclusive minifigure value alone — and exclusive minifigures only get more valuable over time. The Harry Potter theme has been one of the most consistent post-retirement performers in LEGO history; Diagon Alley (75978) has seen extraordinary appreciation, and Hogwarts Castle (71043) routinely trades at 2–3x original RRP.

Do not wait for a sale on this one. The window is closing. If you see it in stock, buy it.

The Eiffel Tower (10307) was originally scheduled to retire in July 2026 but received a last-minute extension to December — giving those who missed the initial deadline a few more months. Don't waste the extra time. This is the largest LEGO set ever produced by piece count, standing 1.5 metres tall when assembled.

At $999.99 AU it's the biggest financial commitment on this list, and the investment case requires some nuance. Comparable Icons Landmark sets have shown mixed post-retirement performance — Big Ben delivered 15% annual growth, while others have been more modest. The Eiffel Tower's advantage is its extraordinary cultural recognition — you don't need to be a LEGO fan to want a 1.5m Eiffel Tower on your shelf. That broader appeal expands the buyer pool well beyond traditional collectors.

For builders, this is simply one of the most impressive things LEGO has ever made. For investors, it's a long-term hold with genuine upside. Either way, December 2026 is your last chance at retail pricing.

LEGO Ideas sets are fan-designed and consistently produced in smaller quantities than mainstream themes. That built-in scarcity is the foundation of their investment case. When Ideas sets retire, they attract buyers from the relevant fan community — in this case, the enormous and passionate Dungeons & Dragons community — expanding the buyer pool well beyond LEGO collectors alone.

The D&D fan base has exploded in size since the pandemic, driven by streaming shows like Critical Role and the 2023 Dungeons & Dragons: Honour Among Thieves film. This is not a niche community. A 3,745-piece detailed LEGO D&D set is exactly the kind of crossover product that becomes a grail piece for fans of both hobbies. Ideas sets like the Seinfeld set (21328) have shown extraordinary post-retirement appreciation — Seinfeld jumped 651% — because they tap into audiences with genuine emotional connection to the IP.

Retiring July 2026. Check LEGO.com AU for current availability and pricing in your region.

PAC-MAN turns 46 this year and remains one of the most recognisable brands in entertainment history. The LEGO PAC-MAN Arcade (10323) recreates a working miniature arcade cabinet — complete with a crank-operated gameplay mechanism — that appeals to gaming fans, retro collectors and LEGO enthusiasts alike. Like the D&D set, its investment case rests on cross-audience appeal.

At a lower price point than the other sets on this list, it's the most accessible entry for Australian collectors watching their budget. The nostalgia factor for 30–50 year old buyers is enormous — PAC-MAN is the kind of IP that makes adults reach for their wallets. Similar gaming-themed sets in the Icons line have appreciated well post-retirement precisely because they capture a demographic with strong disposable income and emotional connection to the subject matter.

Retiring July 2026. Check LEGO.com AU for current availability and pricing.