Free plan is 45k queries, $35/m for 450k and 1,500,000 for $75/m!
This could perhaps be improved. It seems to employ a very primitive negative/positive, large/small dichotomy. I presidct that simply putting the words huge and new will give this comment a positive sentiment....
When comments like 'I'm pretty stoked about it actually.' yield a -50% sentiment, something is broken.