I got Civ6 a while for $50 on Green Man Gaming. It's good, but I'm not sure I can recommend it as is.
The good:
The district mechanics are a massive improvement
City building is a joy
The new science and culture trees are fantastic
The Civs provide a lot of diversity and interesting playstyles
The graphics are gorgeous
Global happiness was removed and replaced with a better system
The espionage system is decent
The new worker system (limited charges, then death) is a big improvement
The bad:
The UI needs improvement, some things like trade routes and unit management are chores (can be improved by mods though)
Diplomacy is terrible, everyone hates you all the time, war penalties are insane
The AI is useless at combat
Navies are almost useless, as usual
Pacing issues (too much science, not enough production)
The religious system is awful
It'll probably be worth a buy in a year when it's half the price and has a few patches and a couple expansions.