Sales reports for my book from the publisher (about 2 per quarter) are grossly inconsistent with visits to the novel's Web site (about 100 per month) and people who've told me they bought a copy. How do I find reliable data?
Here's interesting marketing / sales data for my Tech book at amazon. I recently paid for advertising and you can see that views of info rarely turn into actual sales.
Yes, that's right, the ad was displayed over 25K times yet only clicked 6 times and only purchased once.
So, 100 views probably doesn't even equal 1 sale. That's how marketing works, I guess. :)