I sent them 45 hours worth of YouTube videos to transcribe... twice.
In both cases, work was done in under 16 hours.
At the end of the process, they advised me that a few of their captions didn't meet their quality standards and gave me gift cards that more than covered those costs.
The transcriptions they told me didn't meet their standards were still pretty decent, and I had one of my employees touch them up in about half an hour.
My videos average 8 minutes, so 4 videos needing touchup out of 90 hours indicates a 99.5% rate of good captions. I haven't found any other problems besides trivial capitalization issues on brand names, and that's my fault for not uploading a more comprehensive glossary.
I see some reviews of how they treat their employees on here. While I like to imagine my vendors and service providers all have happy staff, I really wish that things like that wouldn't control the star count of the business on this website.
I wish there was a separate page and score for persons who currently or previously worked for the firm being reviewed.