Sorry to hear about that experience. You should consider using Scale API (www.scaleapi.com). This is a perfect use case for our data collection API: https://docs.scaleapi.com/#create-data-collection-task
All that said, Scale API seems like a nice alternative to Mechanical Turk for some kinds of tasks.
The pricing page isn't totally helpful. I'm not sure if I would fall under `Comparison $0.10` or `Data Collection $0.25/minute`... or if many of those prices apply to a single job.
Either way, I'll keep your product in mind.
It was a bad enough experience that I'd never base my mission critical product on a 3rd party startup. Amazon could go bad too but a small startup it's almost expected.