
I'm not sure if it was a good buy One of the supports was missing a thread in the metal sleeve. The drone seemed to shake badly at low speed. I don't have a balancer to check, but I think they may have needed balancing. Three of the seven remaining broke or ruptured as a result of accidents. Not particularly strong failures. I don't know if this is normal, my only experience so far is with toy drones and they tolerate a lot more abuse but have next to no power. They arrived on time and looked just like I expected, so I was happy with the shipping process.