Reading your “Boys Versus Girls” series

My 11 year old son just got into reading some of your books I had a question his favorite books so far are in a series the series is called Boy Verses girls I think it has 12 in a series do you know how much the books are in the series by any chance he has read some of your books at school

These books are very popular among 4th to 7th graders in particular.  Look up “books” on this website.  You’ll find all my books listed, their price, and where you can find them.  In paperback they sell for about $5, and there are 12 in the series.  I think the series is titled “Boys Versus Girls,” as you said.