The Mac parts are usually 2 or 3 times as expensive as the similar PC parts.
I'm used to repairing my computers, but the broken one was wrecked (it still booted, but the case was bent around the battery, and the screen was broken).
Changing the keyboard of the new one would void the warranty, and having it changed by Apple staff would cost half a new notebook.
So I type QWERTY on an AZERTY keyboard. The only issue I have is the closing paren, (<shift> + <0> in QWERTY) is next to the corresponding key in AZERTY (<-> in QWERTY), so I end up sometimes typing underscores (<shift> + <->) when I want to close parentheses.
I touch-type for the most part, but that key is too far from the home row for me to hit reliably, so I end up looking and mistyping anyway :-)
Story time... My last laptop had a physical QWERTY keyboard, but it met a fateful end (I drove on it) and had to replace it immediately. Good luck finding a QWERTY MacBook in the stores of the corner of France I currently live in... So now I'm typing QWERTY on an AZERTY keyboard.
Not sure how it works on PCs, but OS X has a "US. International" keyboard mode, were ` ' " and ^ àré dëâd keys to type accented characters. You can toggle plain US and "US International" with a simple keyboard shortcut.