I am familiar with simple DV certificates, but not any of the other fancier stuff - like EV, wildcard and Multi-domain SSL certs.
As the title suggests, I'd like to know what the process is for (and how much extra does it cost) to add an additional domain name to an existing shared hosting server's multi-domain SSL certificate?
Long story short, is that an association I belong to has a website (CMS) thru a vendor and it is not secured by HTTPS. All members' login and data is sent in the clear. I raised the concern about not being secure, and a few days later the manager of the club informed the company/webmaster of the club's site wants to charge us an additional $15/mo. or $180 per year, just for the privilege of having secure communications with their app/website (it's their SaaS). I did some digging and realized the company providing the club's website, has our site on a shared hosting server, along with other domain sites that use the same CMS/SaaS, and that some but not all the domains/sites on that server are in the multi-domain SSL certificate.
Personally, in the age of free/cheap (certbot/letsencrypt) SSL certs, I think this is a scandal, specially considering that I'm sure it doesn't cost much to add our domain to the multi-domain cert they are already using. If it helps any, the SSL they have is with Comodo.