This past Friday, Amazon price matched my first book on, making it one of the Kindle freebies. Now I'm confused by that looks like a royalty being paid. KDP shows 10K freebies downloaded for the week ending 6/4; 9 units earning at the 35% royalty and the rest at 70%. Last I checked, 70 or 35% of zero is still zero. Not sure how Amazon has arrived at their royalties calculation, especially since last month, other authors doing similar promotions said they hadn't earned anything. Has the policy changed?