Thawte were established in 1995 and are renowned for their excellent quality and high trust SSL certificates.
Their network is ultra reliable and has the best regarded infrastructure and authentication processes in the industry. Their prices are generally higher than other companies but this is reflected in the quality of their SSL certificates.
SSL certificates are part of their core business and so if you want the best encryption for your website then choose Thawte.
* Prices from usually refer to 4 year deals. Prices for 1 - 3 years are often more expensive, on a sliding scale, unless we have a promotion.