Those are the trunk link earth stations. Not the CPEs.
To be pedantic the radomes are only a couple of thousand dollars each, it's what's inside them that's expensive. Spherical radomes up to a couple of meters in size are kind of a commodity item. The Cobham-manufactured, agile, ku-band tracking dish antennas with Rx+Tx RF chains are expensive.
The small white things not in radomes shown in the picture are possibly beta test CPEs.
Right, sorry. I was referring to the large white ball. Ka/Ku radomes are not cheap. The only information on antenna size is from Elon saying it's the size of a pizza box. Those look too small to be the CPE (imo).
I was referring to what appears to be the gateways. If the smaller one is the CPE I'd be curious to see where the motor is, and how it will be prevented from weathering/failing.