The Galaxy S8+ is one gorgeous device and that Infinity screen plays no small part of that. However, it's also a very expensive piece so you better be careful with it - the replacement are going to be more epxensive than ever. If you manage to break it, replacing the display at an authorized repair center will set you back 250. That is 25% higher than the Galaxy S7 edge where the screen costed 200 to be replaced. This means you better have a firm grip or a nice case because sometimes the Gorilla Glass 5 won't be enough. And if you are particularly clumsy, you might want...
Source: http://www.gsmarena.com/samsung_galaxy_s8_broken_screen_replacement_to_cost_an_arm_and_a_leg-news-24744.php