I haven’t used DriveSavers, but apparently they have an agreement with Apple that whenever they work on internal drives in their cleanroom, that work doesn’t void your Mac’s warranty.
For most services listed, there is no charge if they cannot recover the data, so that’s good. My only concern is if they treat recovering encrypted data without the keys as success, when such should actually be considered failure (since that data is inaccessible without the keys). In other words, they may successfully recover the encrypted data, but what good is that data if the T2 chip refuses to use its keys? Ideally, DriveSavers should verify that the T2 chip still unlocks the recovered data so that it is useful to you.
The real question at stake here boils down to three parts:
- What data did you store on your Mac? How valuable is that data?
- Of the data stored on your Mac, how much of it was also stored elsewhere (such as in iCloud)?
- The most important question: How valuable is just the remaining data that was ONLY stored on your Mac?
If the data in Q3 is worth more than the fees charged, you should try DriveSavers.
Best of luck in recovering your data.