I'm not sure if any of this is particularly costly, but the teardown on iFixit[1] says that each controller has a Bluetooth transceiver, LRA, flash memory, NFC

I'm not sure if any of this is particularly costly, but the teardown on iFixit[1] says that each controller has a Bluetooth transceiver, LRA, flash memory, NFC reader, and the right side has an IR (depth sensing?) camera. It's also a lot of small parts that have to be assembled once you add in additional components like the docking rails and physical controls [1] https://www.ifixit.com/Teardown/Nintendo+Switch+Teardown/78263#s156436 https://www.ifixit.com/Teardown/Nintendo+Switch+Teardown/782...