The cover disk of a new magazine ‘3D Artist’ has the full version of Carrara ‘Pro’ 6.2 totally unrestricted, and no watermarks whatsoever.
Having played with it overnight - its a great piece of software and you cannot go wrong when its just the price of a magazine.
Not only that, you can use the 6 Pro version to get an upgrade to 7 Pro and then get a free upgrade to 8 Pro when it comes out (probably in May).
You just need a Premium Membership subscription - $29.99 then $7.99 a month (but you can cancel that after you have 8 Pro).
This is what I’ve done, and I’m now using Carrara 8 Pro beta and loving it 