Watch: Take a closer look at the new Lego AT-AT
That's £100 more than the previous record holder, 2018's Ultimate Collector Series Millennium Falcon, which retails for £649.
Like the other builds in LEGO's UCS range, the new AT-AT (All Terrain Armoured Transport) — which first appeared in 1980's Star Wars: Episode IV - The Empire Strikes Back — is incredibly detailed and is comprised of 6,785 bricks.
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The set also includes nine minifigures, two speeder bikes and an E-Web cannon.
Designed by legendary LEGO Design Master Henrik Andersen, the man behind the UCS X-Wing and UCS TIE Interceptor, the AT-AT stands at over two-feet tall and can house 40 minifigure Stormtroopers within its hold.
Andersen said, “The mega-sized LEGO Star Wars AT-AT set is the one everyone has been waiting for, and it’s been a thrill to bring this highly-anticipated build to life.
"The AT-AT was an engineering masterpiece and the LEGO set will make an impressive display. But we have also packed in plenty of details that will deliver hours of fun for fans of LEGO and Star Wars alike.”
The Danish toy giant also announced plans to open a number of its stores at midnight on launch day giving fans the opportunity to be the first to purchase the new set.
Some LEGO shops in the UK, France, Germany, Italy, The Netherlands and the Nordics will open their doors at 00:01 until 02:00 on the morning of Friday 26 November, allowing a limited number of fans to make their purchase.
Fans will also receive a midnight opening special gift, plus they browse the store and make other purchases.
The AT-ATs were first deployed at the start of Empire Strikes Back during the Imperial attack on the Rebel's hidden base on Hoth. They also appeared in 1983's Return of the Jedi, and Daisy Ridley's Rey made her home in a ruined AT-AT in 2015's Star Wars: The Force Awakens.