One nice thing they do is give you a www alt name for your domain. (e.g. alt name == www.apple.com for domain apple.com). Thawte charges a minimum of $169 for this.
This means that your certificate will be able to be used by www.domain.com and domain.com.
Some certs aren't able to be used for both (https://amazon.com), and the alternative is to buy two certs.
One nice thing they do is give you a www alt name for your domain. (e.g. alt name == www.apple.com for domain apple.com). Thawte charges a minimum of $169 for this.
This means that your certificate will be able to be used by www.domain.com and domain.com.
Some certs aren't able to be used for both (https://amazon.com), and the alternative is to buy two certs.