Microsoft.com Canada has released pricing for Windows Vista. Windows Vista Ultimate is listed at $499 Canadian which translates into $450.36 in USD. Home Premium is listed at $299 or $269.86 USD, Vista Ultimate Upgrade is priced at $299 or $269.86 USD, while Home Premium Upgrade is $199 or $179.60 USD.
All Canadian to US conversions were done using the Bank of Canada website