Great...your two questions are right: a content manager and a content seller. But you can always use free stuff from here, from Daz and many many others sites.
At the moment the good interaction with others softewares are better in beteween D|S and Bryce 6, its one click and go. But theres a export tool (paid one) to FBX format that almost all softwares can read, or the traditional way: export to OBJ collecting textures and importing into a package that can read OBJ format and MTL (materials for OBJ). Some twiick is needed to getting it work great.
D|S is free but theres are plugins in Daz site that are not free... like the very good Pantomime. But for the paid part theres a good trick: create your scene and render in D|S, post to the Daz galleries and if you are aproved you get a voucher of US$ 25 that you can spend in the Daz site ( I got almost my stuff there this way).Also you can render images with alpha channel and use it to compose others images in programs like Photoshop or Photo Impact or even on free like Artweaver and Gimp.

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