Indeed their in-house options aren’t cheap but then again, the difference in quality is significant. This direct-drive hub motor for example weighs full 2kg less than the equivalent imports. That’s all down to engineering, materials used and accuracy of manufacturing. The other options like are significantly cheaper. I’m running a geared Bafang myself due to its lower weight (2.6kg vs 4.2kg). The lower weight is due to the type of motor - geared vs direct-drive. The lapses in quality are obvious. For example water resistance is not great at all. If Grin make an equivalent small and light geared hub, I’d probably buy it as it’ll most likely address Bafang’s deficiencies and it might be lighter too.