Snow Leopard will cost $29 for Leopard users, with a family pack available for $49. That’s a far cry from Apple’s usual price on OS X updates—it costs $129 to purchase Leopard, for example.
If you’re still running Tiger on an Intel-based Mac, Apple is offering a Mac Box Set which will include Snow Leopard, iLife ’09 and and iWork ’09. The Mac Box Set costs $169, with a family pack available for $229.
“We want all users to upgrade to Snow Leopard, because Snow Leopard is a better Leopard,” said Serlet of OS X 10.6’s price.”