Three days before its pub date, J.K. Rowling's The Casual Vacancy has reached #3 on Amazon's bestseller list, and is #42 on Kindle. Just how big its first week's numbers will be is tough to pin down because of the long preorder window (its been available to preorder since April) and because the book has fluctuated in its ranking since then. One certainty, however, is that print copies will exceed e--the book has consistently been ranked higher in print--perhaps because the print edition (priced at $20.90 on Amazon) is only slightly more than the Kindle edition ($17.99).