Best Buy has the HEXBUG VEX Robotic Arm Robotics Building Kit (406-4202) for $12.49 with free in-store pickupor with free shipping with My Best Buy (free to join). Includes 350+ snap-together pieces. Other Hexbug sets on sale:

• HEXBUG VEX Battlebots End Game for $13
• HEXBUG VEX Hook Shot Ball Kit for $15
• HEXBUG Kraken for $9.99