This is the correct pricing. One caveat: Even the free tier requires you to enter a credit card. For higher volumes, there is also the OCR.space api. It offers

This is the correct pricing. One caveat: Even the free tier requires you to enter a credit card. For higher volumes, there is also the OCR.space api. It offers 25,000 free conversions per month. It is not as good as Google, but works fine on screenshots.