Summary of Sites Where SSL Certificates Are Available for Free or at Low Cost
A site where you can purchase RapidSSL for 1,080 yen.
“StartSSL” allows you to use SSL certificates free for one year.
・StartSSL™ Certificates & Public Key Infrastructure -
・個人利用なら SSL 証明書が無料で利用できるらしい: あるSEのつぶやき
That’s all from the Gemba regarding SSL certificate options.