In my op it depends, Viusual condition or how the bloody thing plays, there can be a massive discrep between the two, I have some tunes thatlook awful and play great and others that look great but I'd never play out, it also depends on demand, cheapos( less than a tenner) are virtually worthless if in poor cond, big rarities can still fetch good money, some tunes, you just cant find in good condition. But as a rule of thumb anything less than VG should go for about half its book value, I bought a Velvet Satins at KH for 120, it book 250, and the copy plays with no surface, so I consider it a bargain. others would be mortified at anything less than M-, Generally tis good advice to listen before you buy anything of any value.