Robotic Rumble (Axel and Beast, 4)

My 9 year old step son loved this book! He's really into video games so he enjoyed the story writte a bit. He finished 2 id the bills in the series in a weekend.

My son loves this series! However, one volume in particular, Robotic Rumble is unavailable everywhere...and a third party seller wants to sell it for $30-$40! That's outrageous!

my son loves this series. He reads them over and over.