Impulse (Jumper III)
seems to be having some promotional pricing right now.
The Nook eBook is currently $1.99 (normally $12.99)
The Kindle eBook is currently $1.99 (normally $12.99)
The Audible.com Audiobook is currently $4.49 (normally $24.95.)
Also, if you do Kindle AND audiobooks the two whisper sync (that means they keep track of where you are and can switch back and forth without losing your place.)
I’ve made inquiries, but I don’t know right now how long this pricing will last so strike while the iron is hot!