Hi, I'm a professional translator, native bilingual English/Dutch (Dutch father, English mother).
For grammar checking and correcting, my standard rates are $0.01 USD per word.
Proofreading and correcting is $0.02 USD, translating $0.04 USD, both per word.
If you prefer to hire me on an hourly basis, my flat rate is $10 USD.
Looking forward to hear from you.
Regards and have a nice day.