You can try direct from SUN for Solaris 8
http://www.suncatalogue.com/
dunno if it is the cheapest option, but if price is a problem, you could always run an apache server on a linux configuration.
Solaris is SUN's implementation of UNIX (and apparently one of the best!)
hope that helps
![Smilie Smilie](https://www.unix.com/images/smilies/smile.gif)