We evaluated over 80 of the cheapest SSL certificate services available from 15 different Certificate Authorities (CAs). All prices are based on one year of service, paid annually. Many CAs offer discounts (sometimes very significant) for multi-year purchases.
Are Free SSL Certificates Really Good Enough for Your Website?
The evaluations are based on:
All but one of the CAs list encryption at 128/256-bit and claim 99 percent browser ubiquity.
A note about resellers: Namecheap appears several times on this list. As a reseller of SSL certificates, the company offers cheaper prices than the certificate originators.