One of my pet peeves. There is a well recognised rating system by the NRA, complete with high quality pictures of examples of different categories of firearms in varying condition. This system is used in the USA and Canada by most reputable retailers and private sellers alike. While it can't replace a detailed in hands inspection it can come remarkably close and is light years ahead of different people's subjective opinions. Expressions such as 'near new', 'exceptional condition', 'beautiful', 'great condition', 'sweet' mean completely different things to different people and are worthless. And don't get me started about 'excellent condition with (add your own defect) some blueing loss in wear areas, worn rifling, pitted bore, "minor" dents and scratches, metal pitting, polished out engraving and markings, broken or missing parts, etc'. If it is classified Excellent it does not have ANY of these defects, period. Excellent, great, marvellous outstanding condition for it's age only means that it is old, worn and is better than at least one other that this person has seen, at least in pictures. It is in no way descriptive of the actual condition of the firearm.
Most CGN vendors are capable of properly asessing the guns they have for sale if asked the correct questions and aren't trying to deliberately mislead a prospective buyer but sometimes their enthusiasm for a particular gun clouds their ability to be objective in assessing condition.
For any purchase not in person ask lots of questions, get lots of detailed pictures and ask more questions about things that show up in these pictures that weren't initially mentioned. If the answers don't add up, only poor quality pictures are provided or not the ones you ask for, just move on. Businesses and private, there are a few vendors who will misrepresent a product, life is too short to waste time on them.