Whether the Petoi Bittle robot is worth it or not depends on what you are looking for in a robot and what you plan to do with it. If you are interested in robotics and programming and enjoy tinkering with gadgets, then the Petoi Bittle may be worth it for you.  It can provide a fun and educational way to learn about robotics and experiment with different programming concepts. However, if you are looking for a more advanced robot with a longer battery life and more advanced features, the Petoi Bittle may not meet your needs.