Calculate royalties from your eBooks and compare Amazon royalties through KDP with BooksOnline. Amazon via KDP pays royalties on eBooks with a strange schedule that looks like this: Any eBook priced between $2.99 and $9.99 earns its author a 70% royalty, but if your eBook is priced outside that price range, above or below, the royalty is only 35%. This results in the bizarre scenario in which you make the same royalty whether your eBook is priced at $9.99 or $19.54, but you make less if it is priced between $9.99 and $19.54. If your book is within that range of $2.99 to $9.99, select the 70% option from the drop down menu, but if it is priced outside that range (i.e. above $9.99), then choose the 35% option.
BooksOnline has no such sliding royalty schedule that works against authors. BooksOnline pays 60% to eBook authors (30% base royalty plus 30% from all sales through their personal affiliate link) plus another 30% for all their eBooks sold by affiliates.