Zia never seems to have what I am looking for.
They do have a large selection of new and used, cassettes and videos and DVDs. But I am almost always disappointed when I go there, not being able to find what I went there for.
You can sell CDs and movies there, too. But there is such a large volume of used and so many people doing it that there is usually a long wait and the pretentious staff is pretty picky.
It is worth a look, though, browsing through the large amount of used CDs and movies, sometimes there is a deal too good to pass up.