https://www.techradar.com/news/samsung-galaxy-s9-and-s9-plus-go-on-sale-today

You can now buy the Samsung Galaxy S9 and Galaxy S9 Plus, as the handsets have gone on sale worldwide today, March 16.

If you're looking to buy the handsets outright, you'll need to part with more cash than the Galaxy S8 and S8 Plus demanded last year.