Originally Posted by Billi
You can't have it both ways, either the books are "equally-priced" or you're "paying more". And if the price is different the reviews lose a lot of their validity -> take it away from books to customer goods: cheap goods get almost always the same or better reviews even if the higher price is more than justified (and also if the cheap ones are overpriced for what they are offering).
But in general this is very interesting, thanks for posting!
Its not the same books in the comparisons.
Rather it is that it works out the same either way: if you look at equally priced books, the indies have better reviews; if you look at equal sales volumes, independent of cost, you get the same, confirming result, which takes price (which tends to be lower for indies) out of the discussion of ebook quality.
This report is popping up all over the author websites because it sheds some light at Amazon's closemouthed ways. And explains why Amazon doesn't brag. They're fast approaching danger territory with ebook sales.