Why would I go to a place which effectively stole open source code and claimed it as it's own? Go to Linux.org and download the whole kit and kaboodle FOR FREE!!!!!
I currently work for a company that has significantly more than 100,000 employee's. Whether I am buying for a large company or a one man shop does not matter. When you buy from red hat you are paying for the support. Ever heard of centOS. Perhaps you should review the following: http://www.beowulf.org/archive/2004-October/010919.html It all depends on the resources you have available.