That's what I've been doing. I had ~1,800 images to read, machine could only read about 900 so I tossed like $20 at it ($0.02 / image) and it is pretty good acc

That's what I've been doing. I had ~1,800 images to read, machine could only read about 900 so I tossed like $20 at it ($0.02 / image) and it is pretty good accuracy. MTurk is hit and miss when it comes to workers, some will just click buttons to see if they can get paid, others completely knock it out of the park. I have another project that I have put about $100 in so far and had decent results (incredibly quickly too!) Getting my work to "good enough", then tossing the rest on Mturk is much, much cheaper in the long run.