Anyone Using Discourse Translator Plugin on small forum, Cost/month?

Hi, I’m considering adding the discourse translator plugin (Discourse Translator )

to my self-hosted forum (Digital Ocean). I’m wondering if people have any experience using this on their own smaller to mid-sized Discourse forums and have any experience in terms of cost/month it might be to use Google or Microsoft translating services.

Any input your your experiences with cost and other factors (is it popular?) greatly appreciated.