If customer payments are being processed by a third party provider such as PayPal, you will not need an SSL Certificate. However, if your customer transactions are being processed through e-commerce, an SSL Certificate is a must. Browser compatibility and browser ubiquity are the factors that must be checked together with the encryption needs before selecting a SSL certificate provider. Different certification authorities like RapidSSL, Thawte and others with high browser compatibility and browser ubiquity have great pricing options. Their services can be sought to ensure a secure web connection and increase your e-commerce stability and you could find some good pricing options at
SSL Star for your consideration.