Amazon has quietly reintroduced the Kindle Touch e-Reader on their main US website but is not internationally. This was the last fully functional device the company released that had speakers and support for audiobooks. It is available with Special Offers and 3G, there is also refurbished models available, but you have to dig through the website to find them.
The Amazon Kindle Touch is relevant again with a recent firmware update that mirrors the UI of the Paperwhite. The older iterations of the Kindle did not really have a proper homescreen, it would list the books in text form. With the new update you now have cover art and personalized reading recommendations. With the Kindle Touch, you basically have the same experience as the Paperwhite gives you, minus the illuminated screen.