I'm asking because I've purchased a 2020 S3 with 40k miles on it with CPO and I'm looking through it's Carfax history and while it does mention:

Code:
Vehicle serviced (8/26/2021)
- Maintenance inspection completed
- 20,000 mile service performed
- Bake fluid flushed/changed
- Vehicle washed detailed
- Drivability/performance checked
- Oil and filter changed
- Brakes checked


Vehicle serviced (4/12/2022)
- Maintenance inspection completed
- 30,000 mile service performed

Vehicle Serviced (11/15/2022)
- Recommended maintenance performed
- Maintenance inspection completed
- Brake fluid flushed/changed
- Vehicle washed/detailed
- Oil and filter changed
- Tires rotated
- Tire(s) replaced
It doesn't specifically mention transmission oil. So do I assume that it hasn't been changed once? Should I just pay a shop or Audi to do it? What's the ballpark price for the fluid change (US)?