6-10 hours?! One is basically adding a 220V outlet, and usually in a place that's very close to the box full of circuit breakers (the garage). In our case, the charger is about three feet from the breaker box. I would have done it myself if it wasn't installed for free (because $REASONS). As it was, took the pro about 30 minutes.

Now, that's not to say there aren't more difficult installations. But I imagine in a lot of cases in the U. S., where a lot of breaker boxes live in the garage, it shouldn't be anywhere near a four figure installation sum. My guess is a lot of contractors of any kind can pretty much name their price right now. Or they do I used to do when I didn't want anymore consulting work: jack up the quoted price enough that I would drop other clients to do the job at that rate should the potential client be desperate enough to pay it.