We're just about halfway the games, but we already have some estimates of how much Pyeongchang 2018 has costed. $12.9 billion dollars. Still a farcry to the infamous $50 billion of Sochi, and it's almost on pair with the $13.1 billion of Rio 2016. Still though, it is a shame the costs increased because of transport (that train from Seoul to Gangneung along added a lot of money to the budget)
https://www.cbssports.com/olympics/news/2018-winter-olympics-pyeongchang-games-reportedly-cost-4b-more-than-expected/
Time will tell, but the early indications are that the big bucks may be paying off. Just this week, Shaun White's gold-medal run at one of Pyeongchang's venues became the second most-watched event in NBC's Winter Games history.