Rotting does not authorize (nor licensed) the sale of mp3s to any website.
Your cash is going to some knob-gobbler that rips us and many other bands off. Nobody but the thieves see a cent from your purchase.

For any Rotting release that is out of print, you're better off downloading a torrent than paying for an illegal download!
If you're looking for Crushed, it is still available for purchase in physical CD format.