With the caveat that I realize Namecheap has been getting a lot of positive publicity here, lately, I'll mention that they continue to offer low prices on RapidSSL certificates. I haven't used them, but comments I've read over the last several years have left me with the impression that RapidSSL certificates are fairly well regarded and are generally considered a good, economical choice.

As you can see from the page, Namecheap also has a significant variety of other certificate choices.

HTH

(And I've nothing to do with Namecheap, other than being a small customer of theirs.)

https://www.namecheap.com/ssl-certificates/geotrust-ssl-cert...

And if you want organization validation, for example:

https://www.namecheap.com/ssl-certificates/geotrust-ssl-cert...