As I noted previously re: Windows Visa Upgrade Pricing, I received some spirited comments and mails.
As I mentioned, I haven't seen an announcement of UK or EU prices for Vista, but will post a link to them when I see them.
As for the pricing on Vista upgrades on the Windows Vista "Get Ready" site, I was glad to see that there is pricing is at parity with the XP upgrade pricing we see today: that covers our home laptops which stay in the home.
Windows Vista Home Premium includes the features of the current Media Center Edition (MCE), which is fine for our MCE PCs at home, as we don't require the feature set of Ultimate. Home Premium also includes the the Aero UI and the DVD authoring, and features I won't take advantage of on our desktop MCE PCs like the Tablet PC UX.
IMHO, a "Family Pack" offering for multiple PCs in a home is an interesting approach that Apple has taken with Mac OSX Tiger (which offers coverage for up to five Macs in a single home: one friend in the Valley with multiple Macs called this his "annual upgrade fee"). Just as I'm able to cover three PCs in our home with an annual OneCare protection and maintenance subscription for SRP$49.95 a year, it's an interesting value proposition to cover multiple PCs in a home on a household annual license basis. (Note: I found OneCare on sale for $19.95 this past Labour Day weekend, after rebate.)