Exact prices change frequently, which is why only approximate ranges are listed.
$ - Under $5
$$ - Between $6 and $50
$$$ - Between $51 and $250
$$$$ - Over $250
Leacock, C., Chodorow, M., Gamon, M.,and Tetreault, J. (2010.) Automated Grammatical Error Detection for Language Learners. Morgan & Claypool Publishers.
Napoles, C., Sakaguchi, K., and Tetreault, J. (2016) There’s No Comparison: Reference-less Evaluation Metrics in Grammatical Error Correction
Thiesmeyer, E. and Thiesmeyer, J. “Comparing Grammar Checkers: Holding Grammar Scammers' Feats to the Fire.” (2014) Accessed November, 2017.
Written by Harrison McNaughtan, Last Revision May 2018