Well, they are flaming you, but you are correct. It is one thing to expect Businesses to shell out money per copy, but there ought to be home licenses that allow you to install on up to 3 PCs, which is what they do with WLOC. If you go to microsoft's marketplace, there is some sort of complicated deal for buying additional licenses of home premium for $40 but I think you have to have Ultimate.
With Ultimate costing upwards of $300, it is probably cheaper and better to buy a new PC with Vista preloaded especially if your PC is over a year old. I love MS and think it is a great company, and I sympathized with them over Bill Clinton's Justice Dept, which sued them for IE's being included with the operating system, but the many flavors of Vista and the high price per copy smacks of true monopolistic behavior and they are going to end up in trouble again.
I have two problems with them. I think $100 for an upgrade to Vista is plenty to charge and I don't buy crippled software. I got Ultimate, but just bought one copy. I will buy new machine and laptop later with Vista. I am disappointed with Microsoft, but I think they will come around ultimately. They usually end up doing the right thing.
Microsoft is on crack, I purchased home premium, installed it then realized
its good for one CPU License. Most households now days have two or more
computers this is not the 80's. No wonder why people create cracks or even
download illegal copies of windows. Microsoft is all about making money and
not here for the average user.