I hope no one takes this the wrong way. I do agree that it's a good idea to list what's used in product renders. I myself have been dissapointed with a product that featured something (in every add no less) that did not come with the product. The merchant couldn't even see fit to either change his adds or provide me the texture he was, in effect, advertising. (it was his own)
That said, (and again don't take this the wrong way) this type of complaint, to me, just feeds the frenzy that poser is "easy". That one can click a few buttons and obtain the controversial "is it art" renders.

Purchases should only enhance the learning process. Not do it all for you. I relyed on schlabber for poses in the beginning but not so much anymore. I hate the lighting in poser but haven't had to use one of RDNA's free lights in a while.
Same with cameras.
Sometimes you need to accomplish something quickly, I understand deadlines, but if you drop an IM to the merchant they should be able to direct you to any item they may not have listed.

...... Kendra