According to Tech Insights, Samsung's new flagship, the Galaxy S10+, cost US$420 to build. That represents a US$40 increase over the manufacturing cost of last year's S9+, while the devices' MSRPs show a massive US$160 differential.
https://www.notebookcheck.net/The-Samsung-Galaxy-S10-costs-just-US-420-to-build.411858.0.html