https://letsencrypt.org/ „… is a free, automated, and open certificate authority (CA), run for the public’s benefit. It is a service provided by the Internet Security Research Group (ISRG).“
https://www.gandi.net/ (as my humble readers know, gandi is my prefered webhoster) is a partner&sponsor and letsencrypt is perfectly integrated into its admin interface.
I just upgraded my hosting-package to the level that supports SSL and enabled TLS with letsencrypt certificates.
What a smooth ride!