Over the last two months I sold about forty 99 cent copies on Amazon. But I had over 1,400 downloads between Smashwords, and Barnes and Noble (Apple hasn't reported and Sony has been about 4 copies). Not bad I thought. That was until Amazon lowered the price to free. In 5 days I had over 5,500 downloads.
That's 1,400 in two months on all the other e-book sites combined and 5,500 on Amazon in 5 days--talk about market power!