Saraiva Mega Store Shopping Rio Sul

Personally, I really dislike this unit. It has a really awful staff, save for a few people working there.
But it has plenty of goodies that you'd usually only find in the Saraiva website. Specially its audio store that has some nice imported stuff.
Anyway, I uploaded a photo of this one.

But I recommend going to Saraiva's Ouvidor Megastore at TownCenter if you want a good time: friendly staff and a really nice caffee & reading lounge.