Yes, we all probably have ou own favorite collection of stealership stories. I've always done all the work on our family vehicles, so my personal experience with this has always been less than most others.
However, last year my 38 year old daughter finally bought her first new vehicle - a Kia Rio. She was making plans to move to a location that was way too far away to drive (1300 miles), which was going to eliminate future DIY. So I very painfully told her that she would be going to Kia for oil changes and maintenance. As much as I hate the stealerships, I also didn't want her to go to random, unknown shops, and potentially ruin the 10/10 Kia powertrain warranty.
So along comes the first oil change, and I asked her how much the bill was. She whispered $250, hoping I wouldn't hear her. Even though my blood pressure was skyrocketing, I tried to remain calm, and explained to her how to use the owners manual to remind the criminals exactly what "required" was. So when the next oil change rolled around, and I asked her what that one cost her, she whispered "more".
I can't fight this battle for her, and for the sake of my health and well-being, we've decided to not discuss this subject in the future. So I now get to live with the knowledge that she is going to be a victim of these criminals for the remainder of her life. It's the pits.