Everyone has had unrealistic clients.. Those are the ones that you fire.. And yes, any time money is changing hands there really needs to be a contract.. It doesn't always need to be a formal lawyer written document, but at least an outline of the job requirements and goals, with metion of payment milestones..

As for the unpaid invoice, that's what small claims court is for if you don't mind loosing the friend.. Which, by not paying your bill he seems perfectly comfortable with..

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Steve : Animal Charms Animal Jewelry | Fishing Blog
I'm smelling a whole lot of if coming off of this plan.