I think merchants have a loremaster value.
I also think this is true, as I reached a certain level the Mayor started selling unidentified accessories, which I believe is due to them requiring higher Loremaster than he has.
Finding rings and amulets with + loremaster isn't that hard though and imo the easiest solution to identifying. I carry the extra loremaster gear in a backpack on a character which has 2 base Points in loremaster.