The Overstreet Guide states that 15 cent version was printed for Canadian distribution, but little is actually known about it. Overstreet doesn't even list seperate pricing for it, only a note that it exists. From what I've read, it was printed at the same time as the 10 cent version. The books are identical except for the cover price. At the time I read the article about the 15 cent Batman # 2, (I wish I could find the article! I know it was in the early 1990s I read it.) it was "suspected" to have been printed for Canadian distribution. Overstreet states that as fact, but I really have few details other than that--if anyone knows more about my book, I'd love to find out myself!
Charlie