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.
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.