1.
Sumo Bot Build Your Own Remote-Controlled Programmable Sumo-Bot
by Predko, Myke, Wirz, Ben
ISBN: 9780071411936
List Price: $99.95
OUT OF STOCK
See Availability on Amazon2.
Build Your Own Robot Kit A Dynamic Learning Platform
by Predko, Michael, Wirz, Ben
ISBN: 9780071387873
List Price: $59.95