There are two kinds of junkyards, at least that ive been to...
The shitty yards, like ecology and pick a part... then there are the premium yards, like where a body shop would buy a bumper cover or door from, these arent self serve, they dont run sales days, and they dont have taco's....
Depending on what your looking for, you may want to look into 'specialty' yards, like ones that ONLY carry merc parts, or ONLY subaru parts... etc.