The pricing is far too high. Only on one occasion out of a dozen did i get a luxury vehicle.
FYI Uber a base specification Mercedes E class is not a luxury vehicle. They are also usually not particularly clean and often with not a particularly competent driver.
I was having a bad day and needed to go from office->home->office->airport. I had to wait 40 minutes for a car (luckily i had thought of this in advance so that didn't bother me). The driver did the first trip then begged me to let him complete the fare there as he didn't want to go all the way to the airport. So I had to get out and book a new journey from scratch.