So do I. Yesterday, because I was procrastinating on something, I decided to analyze my eBook purchase.
Since got my Nook in January, I've gotten 136 free eBooks and I've purchased 115.
121 of the free books I've gotten since April 1.
I purchased 45 eBooks before April 1.
24 in April (however, I had the discounted Sony Gift Cards)
and 46 since April 30.
Average price per book (excluding free books), $5.91.
Can't say what all that means, although the average price per book was somewhat lower than I expected.