HELP! transmission case repair?

I’m Connecticut I would get about $500.00
If that was brought into my shop with no guarantee mind you. There are a lot of variables to consider - but again yours looks really clean and that cooler line has not a lot of pressure. I believe it’s like 35-50psi. If you choose the different case route be mindful of how much you crank those fittings down. It is easy to over torque and steel fitting or bolt into aluminum. Good luck which ever route you choose.