Book sales 2006: Goodwin revisited again

Have resolved to derive a provisional Ingram factor this weekend by taking Publishers Weekly's sales number of 620,000 (which covers sales of all formats of the book) and checking every ISBN for a grand total of Ingram sales, then doing the division.

My 14,000 figure was based on the first edition hardback only. Will post the second analysis here.

Update, 2/12/07: still collecting data.