The safety low of sockets (SSL) is a communicating protocol for brings the certificate of an e-commerce web site to transmitting on Net. SSL apply a plan level which the layers of the change of the hypertext of cyberspace of the communications protocol (HTTP) is accomplished and of the communications protocol of the control of the transport (TCP). SLL applies most authoritative encode scheme of RSA, that admit besides the apply by a digital certification.
Yes, there are many company produce the cheap SSL certification to facilitate the e-commerce sites. It is important for you to get the proper certification as per your requirement. There are some limitations of SSL certifications to get proper security. Based on your site, proper security so more important for you. You can get the better security for your site based on your requirement. In the cheap SSL security the chances of getting hackers are more so you needs to buy hacker proof website of your needs.