Amazon has Mac OS X 10.6 (Snow Leopard) Server, which is set to ship sometime in September, available for pre-order for $499.
Of course, there are actually three ways to get Snow Leopard Server:
- $499.00 through the aforementioned pre-order
- $9.99 through Apple’s Mac OS X Up-to-Date Program if you purchased a qualifying Xserve on June 8th or later
- Free* through the Apple Maintenance Program (AMP) if purchased before the official announcement of Snow Leopard Server’s shipping date
* - AMP itself costs either $499 or $999 for Mac OS X 10.5 Leopard Server 10-Client or Unlimited Client enrollments, respectively, but provides all OS updates (including major updates such as Snow Leopard Server) for 36 months.