alt Hacker NewsCloud City 10123 is 698 pieces. That would've retailed for around $70-$90 new.
It is worth roughly $10,000 sealed in box.
I have some of the original Lego Star Wars sets. All opened and built and etc.
Including this one which I purchased for like $5 or $10
https://www.ebay.com/itm/198386156944
I also have the only Deadpool figure Lego ever put in a set that goes for $75 or $100 by itself. It was in a $20 set.
So the amount they spent could be somewhere in the thousands, but probably below $100,000.
Wow. I do not want to knock collectors but I will never understand them. That particular set worth 10k looks kind of crappy to me. I understand the star wars crossover appeal but still. And I have three kids and have bought countless sets. Every bday and xmas times 3.