FYI, all music downloads from Amazon are MP3, never CD quality. I used to buy digital there fairly regularly, but now if i'm buying lossy downloads I get from google play, as they are 320kbps MP3 instead of VBR. I still buy a lot of CDs, usually when I want lossless and an artifact, something to collect.
That just means that you can't buy that particular track a la carte, you still get it if you buy the whole album. Wasn't sure from your post if you knew that.