In order to understand the justification for paying money to procure an SSL certificate, we must know that an SSL certificate serves two most important purposes.
1. An SSL certificate encrypts the
data for security2. It also establishes trustworthiness of your website.
Although it is a fact that there are many sources for getting an
SSL certificate for your websites, it is highly recommended not to go for cheap sources. This is because, browsers establish trust between an SSL certificate during ‘SSL handshake’ and if your CA is not trusted by the browser, then your visitor will be displayed a warning sign that security of your website cannot be verified. This will instantly destroy the very purpose of getting an SSL certificate.
Now, coming to the money part of the question, Verification of the website’s identity and owner’s credentials is carried out by Certificate Authority (CA). This organization is entrusted with responsibility to attest digital certificates. The authorities need to maintain employees, offices, and also pay the overheads needed to run the show. The overheads also include cost of auditing since Certificate Authorities have to undergo annual Webtrust audit that entitles the CA to be listed with all browsers as a trusted one.