You're not wrong, it looks as though the 3G model is the only one offered any more. Still, it's a lot cheaper than the 3G KKs used to be, right?
If listening to audio files through your Kindle is a really big factor, then the KK is really the only option you can go with, unless you go for one of the Fires. Neither the Kindle 4 nor the Kindle Paperwhite have audio support.
Since you're not fond of touch, and you mentioned the KK being quite expensive (where it's only $20 more expensive than the Paperwhite), I would say that if you don't want to grab another KK, you should grab a Kindle 4.