They've always had a free one-month trial... but the initial price was $99, I think. They've now priced a special Linux "personal-edition" version at $99 which only runs Windows programs on Linux to compete with Netraverse's Win4Lin. The one you want, however is $299.
Since all my developer tools are free, it's the most expensive piece of software I own. The time it's saved me from having to admin a linux box (not to mention actually owning one) is worth far more to me.
