The Mandalorian Film Is 18 Days Away — Here's Why Your Star Wars LEGO Is Worth More Right Now Than It Will Be in June

Published: May 2026 | sellabrick.com

Star Wars is back on the big screen for the first time in seven years.

The Mandalorian and Grogu — directed by Jon Favreau, starring Pedro Pascal, Sigourney Weaver and Jeremy Allen White — hits UK cinemas on 22nd May 2026. Early tracking puts the opening weekend in the £80-100 million range. IMAX screenings of the first 25 minutes of footage are already running as part of the May the 4th event. And the UCS Mandalorian N-1 Starfighter (75442) 1,809 pieces, Metallic Silver, Mando and Grogu minifigures included — just became the first must-have LEGO set of 2026.

For Star Wars fans this is Christmas. For anyone sitting on older Star Wars LEGO sets, it's something else entirely. It's a window. And that window closes the moment the film finishes its theatrical run.

Here's why — and what to do about it.

Why a new Star Wars film makes your old LEGO worth more

When a major Star Wars release hits cinemas, something very predictable happens to the secondhand LEGO market. It spikes.

Casual fans rediscover their love of the galaxy far far away. New fans — especially kids who'll be dragged to see the film — become obsessed and want everything Star Wars. Parents start searching eBay and Google for older sets that are no longer in production. And serious collectors, who already know which sets are retiring and which are climbing in value, start making moves before prices go higher.

Right now, in the three weeks before The Mandalorian and Grogu opens in UK cinemas, all of those buyers are active. Searching. Spending.

After the film finishes its theatrical run — typically 6-8 weeks — that spike fades. Interest normalises. Prices drift back down. The window closes.

If you have Star Wars LEGO sets — built, unbuilt, in a box in the loft, sitting on a shelf since 2019 — the time to get a quote is right now. Not next month.

What LEGO is worth the most right now — May 2026

Not all sets are equal and the secondhand market moves fast. Here's what's commanding serious money in the UK this month.

UCS Star Wars sets are the top of the tree. The Millennium Falcon (75192), the AT-AT Walker (75313), the Imperial Star Destroyer — anything in the Ultimate Collector Series holds exceptional post-retirement value. If you have one sealed, you're sitting on a significant asset.

Mandalorian-themed sets are at peak demand right now for obvious reasons. Like 75408 And any set featuring Din Djarin, Grogu, the N-1 Starfighter or the Razor Crest is being actively searched for. The Razor Crest (75292) retired in 2022 and has climbed consistently since. The Child (75318) the buildable Grogu — is another one collectors hunt for. If you have either, now is the time.

Harry Potter stays consistently strong all year but particularly in spring. Diagon Alley (75978), the Hogwarts Express (75955, 76405) and Gringotts Wizarding Bank (76417) are all either retired or heading there in 2026. Values are strong and climbing.

Icons — retired display sets are one of the best performing categories in the whole secondhand market. The Titanic (10294) retired in 2024 and sealed copies are now genuinely scarce. The Eiffel Tower (10307), Colosseum (10276) and Grand Piano (21323) are all on retirement watch in 2026. Prices on the secondary market typically climb 20-60% within 6-12 months of a set being retired. If you're holding any of these, the clock is ticking in your favour — but only if you sell before the market gets flooded by other sellers who've had the same idea.

Technic licensed sets — Land Rover Defender (42110), Bugatti Chiron (42083), Lamborghini Sián (42115) — have all retired and hold strong collector value, especially sealed.

Botanicals are the surprise performer of 2025 and 2026. The Dried Flower Centrepiece (10314), the Orchid (10311) and the Succulents (10309) all command solid secondhand prices as older Botanicals retire and newer fans hunt for the full collection.

The question everyone asks: should I sell now or wait?

The honest answer is it depends on what you have and what you want.

If your set has already retired — the best time to sell was 6 months ago. The second best time is now. Demand from collectors is highest while the set is still being searched for. Wait another 12-18 months and either you sell for more because scarcity has pushed the price up, or you miss the window because collectors who wanted it have already found it elsewhere. It's a gamble. Taking the guaranteed cash now is the smarter move for most people.

If your set is about to retire — sell before it does, not after. The market gets flooded by panicked sellers the moment a retirement is confirmed. Getting your quote in while supply is still normal means you get a cleaner, fairer price.

If your set is currently in production — you can wait, but there's an argument for selling now if you don't love it anymore. Sealed in-production sets still command strong prices. That changes the moment the product goes on sale or is discounted by major retailers.

If your set is Star Wars, released before 2022, and you haven't opened it — what are you waiting for? Get a quote today.

What most people get wrong about selling LEGO

The biggest mistake UK sellers make is looking at eBay asking prices and assuming that's what their set is worth.

It isn't. That's what sellers are hoping their set is worth. What actually matters is what buyers are actually paying — the sold price, not the listing price. And when you factor in eBay's fees (up to 15%), PayPal charges, packaging costs, your time managing the listing, and the risk of a buyer claiming an item arrived damaged — the actual payout is often significantly less than the headline number suggested.

SellABrick uses real-time UK market data to price sets based on what they're actually selling for, not what sellers are asking. Our AI-powered pricing engine analyses the last six months of sales to give you the most accurate offer available — without the fees, the faff or the wait.

You enter your set number. You get an instant offer. You post it using Evri (we refund up to £2.49 of your postage on every set we accept). We check it when it arrives and pay you the same day.

No listings. No messages at 11pm from buyers asking if the box is perfect. No returns. No disputes. Just cash.

What condition does my LEGO need to be in?

We buy new sealed sets and used sets. Here's what we look for:

New and sealed — factory seal intact, box in good condition. Small amounts of shelf wear are fine. This is where the best prices are.

Opened but complete — all pieces present, instructions included. The box helps but isn't essential. Sets with all minifigures intact are worth significantly more than those missing them — minifigures are where 60% of the value lives on most sets.

Used with minor wear — complete sets in good condition, some minor wear acceptable. We're realistic about the fact that sets get built and displayed.

We don't buy incomplete sets, sets with significant damage, or sets missing major or specialist components. If you're unsure, enter your set number and we'll tell you instantly.

How to sell your LEGO to SellABrick — it takes two minutes

Step 1 — Go to sellabrick.com and type in your set number. Your set appears with its current market value and condition options.

Step 2 — Select your condition and accept your offer. No negotiation, no back and forth. What we offer is what you get.

Step 3 — Package your set carefully and post it using Evri or Royal Mail. We refund up to £2.49 of your postage on every set we accept. Your order number goes in the box so we know it's yours.

Step 4 — Same-day payment. Once your set arrives and is checked, you're paid the same day. No chasing, no waiting for an auction timer to expire.

The sets arriving on our doorstep this month

Based on what UK sellers are sending us right now in May 2026, here's what's moving:

Older Mandalorian sets — Razor Crest, The Child, AT-AT — from fans upgrading to the new UCS N-1 Starfighter. Harry Potter sets from the 2018-2020 era that have quietly retired and climbed in value. Icons sets that have been on display for years and are now heading for retirement. Technic licensed sets — Land Rover Defender especially. And a steady stream of sealed sets that were bought as gifts, never opened, and are now sitting unused while the person who received them has moved on.

If any of that sounds like you, you're in the right place.

Don't leave money gathering dust

LEGO holds value like almost nothing else in the toy world. But value is only real if you realise it. And timing matters.

The Mandalorian and Grogu is 18 days away. The Star Wars LEGO market is as active as it gets. Collectors are searching. Buyers are spending. The window is open.

Get your instant offer at sellabrick.com — it takes two minutes and you might be surprised what your sets are worth right now.