I really enjoy audiobooks, but I dont think Audible is letting the medium flourish to its full potential.

My main concern is that audible is missing the long tail which naturally forms in any price sensitive market, where older products tend to depreciate to the point where they find a buyer. With paper books I can find an old book for cheap and that is great for a lover of words.

Audible distorts the audio-book market with its credit system: as far as I can tell they never discount older or less popular works, cutting off the long tail of potential readers. Why waste a precious credit on an audiobook who's physical cost is now fraction of its cover price?

More marketplace competition, and price / demand sensitive business models would be welcome.