Google Apps for business use costs, but as far as I can tell Google Docs is free for business use. In the Google documentation on the topic, it just seems to state that it's free, full stop (I can't find the page I read that on, sorry).
However, in the Google Docs section of Google Apps, there is a "free trial" offered, which seems to imply that it's not free (though it could just be a marketing tactic!).
Can anyone confirm whether or not Google Docs is free for business use?