The price of the car shouldn't be related to the price of a socket IMO. Why do they charge $140 for a socket falls under the heading of "just because they can"....or they added the "Porsche tax, which is the same thing.
I have a friend that bought a year or two old convertable 911 in 2000 with ~10K miles on it; basically a new car. All was good for the first 3-4 years and then of course it was time for maintenance, and then little **** started breaking all the time, the parts are stupid expensive -the Porsche "tax", and he doesn't do anything other than wash it, so he has to pay to have it fixed.
After ~ten years, he's had enough and decides to sell it; we were talking about it and he said, "this car is the most reliable car I've ever had. Every year I reliably spend at least $3,000 on it in repairs". That cracked me up.
So, a guy's gonna buy it, they go for a test drive with the top down, get back, the guy's getting ready to pay, my friend puts the convertible top up, and the rear window falls out of the top into the back of the car

. The buyer must've felt bad for him and paid him the full agreed upon price.
And yes, $140 is ridiculous for a socket. But it's Porsche. I'm guessing most owners take their cars to the dealer for service, and the dealer gets the socket at cost for the service tech.