It was about $250 for the drain and fill.
I took the car for a long drive on back roads today to charge the battery and try out the transmission. No issues so far -- other than a low tire pressure warning. Pulled over to check and the back tires were low .. one about 10 psi and the other about 20 psi .. no punctures .. I don't know if this is because it was sitting on the rack for a while, or maybe the crazy temp swings we've been having here in the Northeast US. I filled them back up and they've been fine since.