The many vinyl stores know of all of the factors that make up a good copy without even placing it on a turntable. The etchings on the inner groove, the label...etc, etc.
Its nowhere near that simple. I have for example two identical copies of Rumours, Taproot Manuscript, Captain Fantastic and the Brown Dirt Cowboy, and GYBR. For each of these I have one vintage original and one Better Records Hot Stamper. In terms of everything that can be seen with the naked eye they are absolutely identical in every detail, right down to the markings in the dead wax. The originals were bought by me back in the day. The other is a White Hot Stamper bought from Better Records last year. There is no contest, the White Hot Stamper is like putting on the original master tape. Not even the MoFi GYBR can touch its Hot Stamper.
I've compared others like this with the same result. The record stores don't have a clue, any more than most audiophiles do. Anyone who thinks they know the sound quality of a record just by looking at it is telling you they don't know squat about records. There's two and only two ways of finding an exceptionally good sounding copy- listen (to a whole bunch) and pick the best, or buy from Better Records.