I just meant as it should be the same price as the Falcon, and that's the major thing that's changed recently.
If anything the Falcon is the odd one out. Back in October 2017 the exchange rate was 0.88 £ per euro so 799 euro = £703 but the UK RRP was £649.
The Star Destroyer was £649/699 euro 699 euro back in 2019 when it launched was about £622 (0.89 £ per euro).
Today the its 0.86 and it has been as low as 0.84 which is so 799 euro is £687.
The Brexit impact will have some additional admin cost but we are talking a few £ here and as far as I am aware the regulation the products have to meet hasn't actually changed. The exchange rate has also been all over the place in recent years, as low as 0.91 and as high as 0.84 so there is no doubt some of that built in too.
So the new At-At does feel a bit over priced, perhaps £25-£50 but not close to the £100 you suggest it is.