in the US a "simple" no frills root canal and cap costs $600 for the drill and fill, and about $500 or $600 for the cap/crown/whatever milling. That includes anesthesia, post care prescription (not the medicine itself, just the scrip), x-rays, etc.

Usually you know when you need a root canal. It's usually because just getting a tooth filled is more expensive than getting it pulled, and most 'decent' dentists won't do pulls, because it eventually, allegedly, leads to all of your teeth shifting and falling out.

I've had dental insurance a couple of times, and while it was $20 to get a full cleaning and xray or whatever, they wanted me to get braces for $2500 out of pocket. I've never had another dentist i was paying for myself ever mention braces or anything else. from 20-38 i went to the dentist like 5 times, 3 cleanings when i had insurance, and 2 wisdom extraction. I'm well aware i lucked out in the dentistry lottery, most people i know have way more problems with their teeth, and i am unsure why, so i never judge people on their dental accoutrements.