I just discovered that Netfabb sells a version of their commercial package called "Netfabb Private" for $299. It's basically the full package but with the restriction that it can't be used for commercial purposes.
Has anyone tried it (or the commercial version)? I use Netfabb Basic for a few things and it seems stable and functional. But good Booleans are hard to find. It'd be worth it to me to pay for the upgrade just for the Booleans if they work well.