As i said previously I am talking about a guidelines, not a strict policy that will be enforced with capital penalties (as used to happen in the case of medieval guilds Ravells). A guide for newies that want to not undervalue his or her job or a guide for requesters that want to know how much expect for a professional work.

I agree that size matters, also agree that copyright counts and I think that technique should count too (from my point of view creating an B&W map takes a lot less time that a full color illustration).