Review on 🔬 Exploring Scientific Concepts with AoHu Science Educational Building Experiment by Gary Christon

Looks good but doesn't move. Tested with a separate battery pack and found the solar panel failed to charge. I considered replacing the solar panel but found that there was no way to contact the seller. When powered by a backup battery, it can run a short distance, after which the gears get stuck. Spare parts are not of very good quality and therefore the gears did not work properly. It's a bit tricky because you never know if it's good until you put it together. It's too late to return or replace once you've picked it up. And there is no way to contact the seller either. Can AMAZON do something with such an article?