Once upon a time, domain registrars did this: you take the domain cheap, generally cheap for a year. A year has passed and the renewal is already 4 times more expensive. Many domains, cheap renewal.
Then secure connections appeared and if you have an SSL certificate, then you are well done and cool – your site is more trustworthy. Free SSL certificates.
And then it became so – if you do not have a secure connection on the site, it means that it is dangerous to visit your website. Even if it does not have forms for transferring personal data, payments, etc.. and so on.
How much does a certificate for a secure connection cost? – as a domain for three years. If you do not dig a little in the settings and do not understand, that there is a free issue of certificates (look for let's encrypt) or dig the settings on the hosting, then for the site now it would be necessary to pay much more.
I See, that everyone who needs to find will do, but just in case, so that readers do not overpay either – know, SSL certificate can be issued for free.