Excited this morning to get a price alert on this stonker of a board game. ~Equal lowest price as Aug 2019 from camel^3. Currently $279 at Gameology.
I'm buying focussed on solo play, personally. I've been on the lookout for the Ultimate Edition for a while, and probably would have been dead keen for this price second hand. Ultimate Edition includes 3 expansions and generally seems to be a no-brainer when talked about on forums.
Board Game Geek info link.. 9.0 rating FWIW, 150 mins+ playtime, 1-5 players, 4.61/5 complexity rating (just the way I like it).
May this lead to fun times with your friends or family. Or just you, on your own, at a giant table. Alone with your calculations and strategising. Maybe a glass of scotch.