More for Less

Why charge more for less? Here's an audiobook of Spider Robinson's The Callahan Chronicals from Blackstone Audio. Its runs $24.95 for the MP3CD version.

Now...you would think this would be cheaper. Here's the same book from Audible. For a download, since you are paying for the connection and you are paying for storage (either on your hard drive, your MP3 device or the cost of a blank CD), you would think the price would be lower. So why does Audible charge...$31.47? (O.K., you can get it if you join their "club" for $7.49. But there are terms and conditions that you might not want.)

I'm obviously "missing something obvious" (and yes, I'm being sarcastic).