If you're going for max profit sure, if you're just going for getting the materials and catalysts without needing the marketboard though, then it is not a wasted venture. I am not all about "MORE GIL! MUST HAVE OCTODECILLIONS OF GIL NAOW!" - I like to instead be more self-sufficient and use my own skills and those of my retainers only to gather materials and catalysts. Even if that means less profitable ventures.
