Where it sells
All of them. On KDP, ebooks priced $2.99 to $12.99 on Amazon.com qualify for the 70% royalty option, and a new ebook’s detail page can take up to 72 hours to appear.
IngramSpark connects books to more than 40,000 libraries, retailers and online stores, including Barnes & Noble, and prints on demand. US authors can take a free IngramSpark ISBN, but the book then carries IngramSpark’s Indy Pub imprint and that ISBN cannot be used elsewhere. Your own ISBN from Bowker costs $125 for one or $295 for ten.
ACX produces and distributes audiobooks to Audible, Amazon and Apple Books: exclusive distribution earns 40% or 50% depending on the royalty model, non-exclusive earns 25% or 30% and lets you sell elsewhere. Ebooks enrolled in KDP Select also earn from Kindle Unlimited pages read.