Yes, Mandriva Move, the live CD of Mandriva is available near the bottom on the same download page.
Allow me to clarify my reasoning about commercial Linux distros being good for Linux. Firstly, I have no problems with anyone wanting to receive monetary compensation for their work. Most distros have volunteers working on them while others such as Mandriva and Redhat are a corporation with a dedicated paid staff of employees.
Now please don't get me wrong, I'm not saying that commercial editions are better or worse then their free counter-parts. The great thing about Linux is that their is a distro for almost everyones differing needs. This is where commercial distros come into play. I would not pay for a distro myself as the free distros suit mine and just about every other home or single user just fine.
Companies and corporations however are not going to dedicate and entire infrastructure to someones "hobby" distro. They want and need the support from companies like Mandriva and want the confidence that they are not going to be abandoned with no support. Commercial distros offer that support and are made specifically with the large business/corporate uses in mind. Without that support and confidence from larger commercial distros Linux will never stand a chance in the corporate world.
So yes, I agree and would not pay for Linux myself as a home user. If I had a business to run however I'm going to want the support that commercial distros offer.