blows my mind that you actually need to pay them just to look at your car. i suppose you are living in the US? the only thing you can do is spread the word that that dealer sucks.
Yeah... It's really shop-to-shop and dealer-to-dealer. I've been to shops before that waive the diagnosis fee if you choose to do the repairs with them.
I already told them what the issue is, I have video evidence of it. Even then, all it will take is to put the car on a lift, rotate the driver's side rear wheel, and they'll see that the CV axle is fucked in six different directions. It would never ever take them more than 10 minutes to diagnosis it. That's what $125 gets you.
The reason it cost me $40 at the private shop? Their policy is a 30-minute minimum charge, which is reasonable. It took about 15-20 minutes with driving and identifying where the noise was coming from initially, so $40 felt super reasonable.
$125? Fuck you. I told you what's wrong.