Record store for collectors. They specialize in Spanish stuff but they've got records from all the subgenres of rock, tons of quality reissues and reeditions that can otherwise be hard to find, and some rare originals. The place isn't cheap, but if you're looking for hard to find stuff it's worth a go.
Rare singles are behind the counter and you have to ask to see them.
915 318 544
Open Monday-Saturday 10:30-2:00 and then 5:00-8:30.