Actually, you are allowed to get free and/or individual validation (at $60) certificates from startssl.com for use by an organization, but if you don't pay the extra $60 for organizational validation the certificate will only list the individual admin's name (who they considered their customer), not the organization's name, in the certificate metadata. That metadata is not particular important, however. For example, the lwn.net certificate belongs to "GeoTrust Inc." (the issuing vendor) according to its metadata...
Also worth noting is that for those $60 (or $120 if you are particular about the metadata) you get to issue an unlimited number of certificates, including wildcard- and SAN-certificates, for an unlimited number of domains, during a 350 day period, and each certificate is valid for 2 years.
I have yet to find any other place that offer even a single 2-year wildcard- or SAN-certificate at that price. Single-host certificates can be had cheaper at other places, but those are free at StartSSL (even for organizations, if you are not particular about the metadata).
(Note that I'm in no way affiliated with StartSSL or StartCom Ltd, Iäm just a satisfied customer.)