I know that anything bought at Daz is OK to use in commercial renders but I'm not clear on how things work here at Renderosity. As far as I can tell Renderosity has no blanket policy on this and each artist has their own license which may or may not allow commercial use. Is this correct?

If so, how can I see the license for the items before I buy them? There is a link with each item listing to a readme file which sometimes mentions licensing conditions, but often no information is given.