self-publishedEver wonder how many self-published titles are on the market?

1,000? 10,000? 100,000?

It’s even higher than that.

Just last year, Bowker said 391,000 ISBNs were purchased for self-published titles – a 59 percent increase from 2011, according to a release from the company on Digital Book World. In 2012, 40 percent of percent of ISBNs were for self-published titles compared to 2007 when it was just 11 percent.

“The most successful self-publishers don’t view themselves as writers only, but as business owners,” said Beat Barblan, Bowker Director of Identifier Services, in the company’s press release. “They invest in their businesses, hiring experts to fill skill gaps and that’s building a thriving new service infrastructure in publishing.”

In addition, more than 80 percent of self-published titles that went to market came from just eight companies. Bowker cited Smashwords and CreateSpace as two examples.

ISBNs are used to identify an edition of a book. One ISBN costs $125, but costs less when bought in bulk.

A full report will be available next week.