Makeblock DIY Ultimate 2.0 Robot Kit – Premium Quality – 10-in-1 Robot – STEM Education – Arduino – Scratch 2.0 – Programmable Robot Kit for Kids to Learn Coding, Robotics, Electronics and Have Fun Price: $402.49 (as of 29/12/2019 19:47 PST- Details)

Ten building forms will meet all your need for different application scenes – Robotic Arm Tank, Robotic Bartender, etc.
Great for learning robotics, electronics, graphical programming, Arduino programming and Python programming;
Anodized 6061 aluminum mechanical parts with threaded-slot design brings an easy way of building the robot;