Originally posted by: Smilin
Redhat with 24x7 web support, $799
http://www.redhat.com/en_us/USA/rhel/compare/server/
Windows Server 2003 Web Edition, SA, 24x7 web support, $399 ($349 for license only)
http://www.microsoft.com/windowsserver2003/howtobuy/licensing/pricing.mspx
(
http://www.pcmall.com/pcmall/shop/detail~dpno~139344.asp)
Obviously not a perfect apples to apples but very close. A $300 difference is pretty significant. Some notes:
SLA on web support with MS is 4hr response time I believe. RH is 2 days.
At MS Web support incidents usually transition to phone if the customer would like.
With SA, you'll get support coverage for product life.
With RedHat it's only for one year.
If you are self sufficient and never need support and can honestly say that in a production environment you will NEVER need it then sure a free OS would be cheaper. In any other case, Windows is cheaper.
edit: Keep in mind, the above is the worst case scenario at MS. You do volume licensing, a premier agreement or something similar you're going to get 24x7 phone tech support (heck, if a premier agreement guy calls on a critsit he can have a dude from MS on a plane within 4hrs) and the cost is still going to be better than tech support from RH.