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This is a follow up to my recent post "Understanding ISBN numbers and UPC Codes". I felt I needed to add a few more bits of information about getting the ISBN Numbers and UPC Codes and their costs.

Bowker is the U.S. broker of ISBN numbers. This is the place to go to get your number. Usually, Bowker sells numbers in blocks of 10, for approximately $250, or a cost of $25 per book. This price also includes the UPC Code (Bar Code) which you will also need. If you don't wish to purchase ISBN's in blocks of 10, you can purchase a single ISBN. However, it's not as easy, and not as cost effective. You have to call Bowker directly at 877-310-7333 and request a faxed application for $125.00. I haven't yet been able to find the form downloadable from their site. Additionally, this cost is for the ISBN number only and you have to purchase the bar codes separately for a cost of $25.00.

You don't have to purchase the bar code from Bowker though, there are other options available. If you want to do it yourself, there is a whole list of ISBN software available online for generating your own codes, or you can try companies such as Bar Code Graphics that will create the bar code image for you for about $10.

On a final note, you may also want to consider registering your book with Bowker's directory "Books in Print". This is their master list of all books available. Oddly enough, when you buy your ISBN number from Bowker, you aren't automatically registered into the master list.

We have a lot of customers inquiring about if they need an ISBN number and Bar Code for their books. The answer to that depends upon your needs. Let’s start with the ISBN Number. You are not legally required to have an ISBN number. It simply depends upon if and how you are going to sell your book. So if you are selling your book through workshops, direct mail or through the Internet, you most likely will NOT need an ISBN number or Bar Code.

If you plan to sell your books through retail chains, and specialty stores and catalogues, (Borders, Barnes & Noble, Amazon, etc.) you will most likely be required by the reseller to obtain an ISBN number for your book for inventory and general ordering purposes.

An ISBN number identifies a book title or edition from one specific publisher and is unique to that edition, meaning that it can never be reused. This also means that if you sell both a hard copy and a soft cover of your book, you must have two unique ISBN numbers.

The ISBN itself is a 10-digit number that is divided into four parts separated by hyphens. The first part of the ISBN is a group or country identifier. The second part is a publisher identifier. The third part is a title identifier. The last digit is a check digit used to validate the ISBN. In other words, the ISBN is a code that identifies your book around the world. You can apply for an ISBN number by contacting Bowker, who is the U.S. broker for ISBN numbers.

Now for the Universal Product Code (UPC), also known as the Bar Code. This is a computerized product identification system. The ISBN is not the same thing as your Bar Code. Most retail chains require both a ISBN Number and Bar Code. However, the ISBN Number can be translated into bar code format. When you purchase your ISBN number through Bowker, you can also purchase the Bar Code, or you can find a list of UPC Code (or Bar Code) suppliers here.