Ridiculous dealer repair costs

The tpms warning light kept sporadically coming on and after reporting it to the dealer during oil changes they finally decided to check. One TPMS sensor was dead. They offered to pull the tire & replace it for .... $380!

I looked the part up on amz, it's $50-99. I can't change it myself so I found a local tire shop friends recommended. Total cost: $75 and they rebalanced the wheel.

BTW, apparently the flood of errors was causing other issues with the system like the map wouldn't initially display when starting the car.