I think, since it was the "beginning" that none of your concerns could be accurately known until you'd had a little experience of the people and situation? If I were in your shoes I'd try to feel like I'd gotten some valuable education in various "set-ups" and know that next time I would do more research rather than just trust that associate; I'd go with my gut feelings about people and their work habits and whether me and my limited resources were a good fit, etc. I wouldn't mind either that the people believe my reasons for leaving are merely monetary; it's not our "job" to tell others about their projects and how they aren't organized right, etc. The "market" will do that for them.