Grading means press-quality not sound-quality! It’s up to the international standard except there’s no “excellent”. Records are graded first, then covers! All special packaging will be noted, so if it’s not listed it ain’t got it (w.the exception of sealed albums – I don’t have x-ray-eyes).
still sealed (no reclamation accepted on older records)
mint/new/unplayed or as new/very little played/cover as new or very little signs of use
what others call excellent/slight surface noise on a few spots/mainly as new/plays better than it looks/very slight cover-wear
often played, but still very good/only moderate surface noise (smoother than the music), surface marks, pops, crackles or tiny scratches but no skips or jumps/cover used but still very good
good, played very often, bigger scratches or heavy surface-noise but no skips or jumps, cover existing but well used(cover-tears). There shouldn’t be more than 5 records in that shape!
plus/minus, tendency of a grading for the better or the worst