Amazon provided their monthly discretionary boost to the KDP fund that tells self-published authors — retroactively — how much they will be paid for ebooks borrowed through Kindle Unlimited. For April accounting, the pool totals $9.8 million, the highest monthly amount yet. But the fee per book borrowed through KU remains in the relatively low range, at $1.355 per read. (That translates into roughly 7.232 million borrows for the month.) For the 10 months since KU began, through April, Amazon has paid out approximately $67.3 million so far.
