Thanks for your question. First, let me request that if any of the
following is unclear or if you require any further research please
dont hesitate to ask me for a clarification.
You requested information regarding an online or offline - resource
that will provide information concerning the number of books sold for
any book that's ever been published, or at least for books published
since 1990 or so. You also specifically requested information
regarding Slander: Liberal Lies About the American Right.
The absolute best source of data is available by phone (automated)
through Ingram. However, this will only provide you with sales made
through Ingram the standard multiplier used to estimate system-wide
sales is 6. Lets use Slander as an example.
First, the phone number you need to call is
Be prepared to punch in the books ISBN number. In the case of
Slander, its 1400046610 (I got this off of the Amazon page; you
could also look it up inside or on the back cover of the book).
Ingram provides both inventory and sales data.
For Slander, Ingram reports inventory data as follows:
509 copies in warehouses
312 copies on order
8 copies on back order
And sales data:
Unadjusted demand 1,367
Last week adjusted demand 721
***Sales this year 30,557
I am not sure what the demand metrics reference exactly (especially
the first metric; the second is pretty much self-explanatory),
however, if you call every week they will give you some sense of how
demand for the book is changing.
Multiplying the sales number by 6 gives us about 183,000 sales this
year. Since the book was published this year, Ingram reports zero
sales for last year; it would report the actual sales had there been
I checked the multiplier with an author-friend, and it comes pretty
darn close. His agent actually uses a multiplier of 10, but given
that we have seen the multiplier work for my friend's book, "10" seems
to be a bit too liberal.
Another good data source is JungleScan
JungleScan tracks Amazon sales rank data; while it wont give you the
number of books sold, it will provide a good indicator of demand and
trends. Slander is already tracked
And from the home page you can add any other book you wish to have
I hope this response adequately addresses your request. Please let me
know if you are in need of additional information concerning this
Clarification of Answer by
04 Jan 2003 02:45 PST
Hi again. My apologies, but I have searched far and wide, and have
enlisted the assistance of some friends - but could not identify a
source through which you could easily obtain such data.
What I have heard several times is that people simply collect the
information over time.
Since Ingram tracks this information and makes it available to the
public, they likely keep track of it themselves as well - I would
recommend that you try contacting them directly to request data for
the books in which you are interested; they may have a statistics
department that would service such calls. Here is some contact info
for Ingram -
Phil Frazer, Publisher Relations Supervisor
Ingram Book Company, 1 Ingram Boulevard, LaVergne, TN 37086-3629
800-937-8100, ext. 5369
One way or another, you should be able to touch base with this
Please let me know if there is any other way in which I can help.
btw, if you are not satisfied with my reply to this question, I can
request my editor to issue a refund. Please let me know if you would
like me to do so.
Good luck with your quest!