I just received 10 PCBs that ordered from dirtypcbs.com a couple of weeks ago. I have to say that the quality is amazing. For $14 they are not dirty at all! The lack gold plated pads, unlike PCBs from OSHpark, but if that is none of your concerns then it’s a go! I don’t claim that OSHpark is obsolete now, but for simple prototyping when you want to be allowed to make mistakes, dirtypcbs are filthy enough to allow you to do that.