My Clarity was damaged in a collision with a deer and I have the repair cost including replacement of the battery listed as part# 1D1005WJA02 at $6,101.97 plus about 15 hours of installation labor. I don't know if this is MSRP or a price negotiated with my insurance company. Incidentally, with what looked like minor damage to the right front corner of the car, the total bill came to over $20K!
I'm actually not that surprised. As more of these battery cars are in incidents, they may have to replace mostly the entire battery. That makes the replacement expensive. If you have a large battery BEV some may get totaled due to cost of replacement.