What should valve body replacement and TCM, new fluid and programming cost on a 2013 G37 journey (116k miles)?

I took mine to aamco and they want $4,900 total, tax included. The part would be new from the dealer. What should I do?

 

The part lists for under $1500 probably, 8-9 quarts of fluid and 3-4 hours labor. You are being seriously overcharged.