lol, that's one reason I almost always jump at the chance to snag freeware editions of stuff, bryce 5.5 for example, dunno if I or anyone else posted it here, but here's the download link:
Bryce - Free software downloads and reviews - CNET Download.com
you'll need to register at the software manufacturer's website to get your free serial number, I've provided the weblink to the registration page here:
DAZ Productions - 3D Models, 3D Content, and 3D Software
enjoy!