Actually I was charged $125 an hour for 2 apprentices at 11 hours, so you can do the math since mine wasn't perfect. Total $1375
Was charged $2469 for a navien nr-210(a) Also charged $431.17 in materials

How's that?

My son is a doctor with 11 years training so far and doesn't make $687.50 a day.
Hope I got that math right. I don't want to lie