So you may perhaps need to have 4 or 5 ISBNs just for 1 of your titles. This is why it might be smartest to purchase your ISBNs in blocks of ten, 100, or maybe 1,000. Remember that after these figures are assigned, they can't be re-applied. Our ISBN packages http://trevorgugsd.suomiblog.com/not-known-details-about-flyer-printing-27958910