Similarly, I'd imagine a LIDAR sensor built for a Cruise car to be $30 wholesale, $40 if you buy the exact same thing as an aftermarket replacement part, and $1

Similarly, I'd imagine a LIDAR sensor built for a Cruise car to be $30 wholesale, $40 if you buy the exact same thing as an aftermarket replacement part, and $150 if you buy a standalone LIDAR sensor with the parts you need to actually use it. Because a replacement Nexus 7 screen isn't going to natively interface with my Raspberry Pi, and neither will a Cruise LIDAR sensor. A $30 part that needs a $20 interface isn't any better than a $50 part that includes the interface.