Upload to Smashwords and they distribute to most sellers except Amazon and Google. I've had Apple, Tolino, Kobo and Barnes & Noble (Nook) sales via Smashwords. We sell about x2 as much on Amazon as Smashwords, so obviously using both makes sense, despite in general Amazon has about 90% of ebook sales.
Google Playstore/Google Books hardly seems worth uploading to, except it's free and more advertising? No Google Sales in 5 years!
But I think Barnes & Noble hasn't yet figured how to sell paper and ebooks, despite that Amazon has done so for years.
|