I’ll leave it as an exercise in creative thinking to come up with reasons I might have been buying a Ken Dodd triple album:
That aside, is there a problem here?
But would you simply chuckle and shout bug?
Let’s make it an exercise in creative thinking to suggest scenarios where it’s reasonable for it to be cheaper to buy the CD and the MP3s than to buy the MP3s alone. Stick ’em in the comments if you like.