I buy most of my vinyl from one of my local record stores. However, I'm not much of a jazz fan and my record store does not focus on jazz. That said, I buy quite a bit of vinyl from dealers on Discogs. My findings are that they are almost always over-graded by one or two levels, i.e. NM- graded records are actually VG+, etc. Rarely have I ever bought a M or NM used record that I considered accurately graded.
