While purchasing ssl certificates, there are few things that should be keep in mind such as the ssl certificate is from the trusted certification authorities or not. One more and important thing is price, yes same ssl certificate is available with different pricing at different re-sellers of ssl. Choose the best one by comparing price and features of ssl certificate. Purchase ssl certificate as per your requirement like if some one have multiple sub domains then they should buy wildcard ssl certificate and some have multiple domains then they should buy SAN (multi domain) SSL Certificate. Now browser will only allow 2048-bit SSL certificate from January 2014, so its also the thing to look forward when purchasing ssl certificate.

An SSL certificate serves the purpose on a website for security. An SSL certificate is used for the primary protection of the user while they are online.

I recommend two answers to this question and the first one is, get free SSL certificate

And the second one is, instead of getting free SSL certificate for certain period go with self-signed SSL certificate to protect your websites data and users information.

There are many options for one seeking a Comodo SSL certificate. When one uses a Comodo SSL certificate, one's files are strongly encrypted and protected.