Yesterday, I was hoping that Bowker (the official ISBN agency for the U.S.) would run one of its promotions so that I could get a discount on ISBNs—ask and ye shall receive! This morning’s e-mail brought exactly that: through 11:59 p.m. ET tomorrow, you can use the code SPRING17 to get a 15% discount. So, I now have 10 fresh new ISBNs. Woo-hoo!