The best thing you can do or the best collections you can get from is the internet its self. There are many torrents trackers, emule and stuff like that cause if you are looking for something special it will be very difficult for you to get your hand on it from a store and that to here.

And someone mentioned yume.com.qa This is what I got from there:

The website is unavailable at the moment ..
Please visit us soon for your orders please contacts us: [email protected]