That's a fair point, but it's still likely less expensive than replacing your existing opener if you include the cost of an electrician doing the wiring for you.
It's really not hard at all. It probably took 5 minutes to install, with most of the time futzing with the power cable routing so that it looked decent and didn't rub on sharp corners of the opener bracket.
I agree that it's not challenging. I'm just saying that even if someone is intimidated by doing this, it's still probably a relatively inexpensive option even when you include hiring an electrician.