They were targeting $7.5k for their in house honeycomb lidars and they have 12 of them - that’s 90k already.
https://www.theverge.com/2021/8/27/22644370/waymo-lidar-stop...
They also aren’t close to the $7.5k target (there isn’t any public source for that so you’ll have to take my word for it).
Also $30k wouldn’t even cover the base vehicle.