From a investment pov, would it worth buying and leaving it completely unopened in a cupboard somewhere for a couple of years?
So, in the last few years or so more people have cottoned on to the idea of Lego reselling, because some certain sets appreciated
massively compared to their RRP. Big sets that didnt sell in huge numbers, or ones that just werent available for long became gold dust to those rediscovering their love for lego in their mid-late 20's or so, where they had some spare money around to spend. Sets like the original UCS Falcon and the Green Grocer (big modular building, had a lot of a certain colour brick that werent put into any other sets) skyrocketed and ended up being worth thousands of pounds.
The last few years that re-seller market has sort of stagnated, with people sitting on 20-30 sets in the hope that they'll go for triple their value in a year or two, and while there are some gains to be made, sometimes it comes in an unexpected set like the Ant-Man Final battle (a £12 set thats now going for around £4-50 on eBay), its also meant that people have horded sets that wont do more than 2 or 3% over RRP.
The Falcon is an interesting one, because the original was the poster boy for mental gains, up until a few months ago when rumours over a remake looked solid, they were going for 3-4 thousand pounds, and it will be interesting to see what this remake will do to people still holding on to them. The bottom could fall out of it completely, with people after that huge Falcon set going for the bigger, newer version, or it could do not much, with hardcore enthusiasts still wanting that special set.
This set, who the fuck knows. I will say one thing, the initial stock will sell out before Christmas. Partly because of people thinking its going to be a new investment goldmine, but also because Lego fans will go mental for this. Investment wise, we dont know how many will be made, or how long it will last for. The old lego Death Star was on sale for years, most UCS sets are available for around 2 years, and I imagine a set this enormous and special will lost longer. But, Lego are weird, and they kind of do things you dont expect with sets so I might be wrong and its gone within a year. If youre looking at this set from a purely investment point of view, I wouldnt bank on it. The starting cost is going to be around £700 and theres no guarantee what sort of rise itll get after it retires, or when that will even happen. If you like the set, get it to build it, theres better investment sets out there.