Don't submit to the SSL cert racket. You can get one for no charge
I've used StartSSL in the past.  I will never do so again.Yes, the certs are free, and yes, they work in all common browsers.  But the process of obtaining them is a horror of Lovecraftian proportions.  I'll happily pay a few dollars to Namecheap to be able to avoid the nightmare that is StartSSL's UI.