Link to a Prius board, member is asking if the car is worth the repair:
https://priuschat.com/threads/head-g...rth-it.222402/
He lives in SF CA, says estimate was $4-$5000 dollars to replace head gasket on a 2010 Prius. That sounds quite expensive to R&R a head and replace the gasket on a 4 cyl. engine............
Evidently it's a common malady as a You Tube search has a lot of videos dedicated to Prius head gasket replacements.
https://www.youtube.com/results?sear...ket+2014+prius