Great price, enjoy!
Some of the dlc is also cheap, and the Deluxe Edition is available at $9.19 here https://www.cdkeys.com/pc/games/cities-skylines-deluxe-editi…
From the makers of the Cities in Motion franchise, the game boasts a fully realized transport system. It also includes the ability to mod the game to suit your play style as a fine counter balance to the layered and challenging simulation. You’re only limited by your imagination, so take control and reach for the sky!
Constructing your city from the ground up is easy to learn, but hard to master. Playing as the mayor of your city you’ll be faced with balancing essential requirements such as education, water electricity, police, fire fighting, healthcare and much more along with your citys real economy system. Citizens within your city react fluidly, with gravitas and with an air of authenticity to a multitude of game play scenarios.
Cheapest ever? Great find OP!