Business English teaching rates

Good morning Forumosaers. There are some older posts on this topic but I couldn’t find too much contemporary information, so I thought I’d risk being pilloried by throwing out this question: What rate should I expect/request for corporate English coaching through a teaching firm? I do not have direct teaching experience, but have 10 years under my belt as an editor, much of which involves fixing the English of adults (albeit first-language speakers).

As ever, any advice would be hugely appreciated.

These are some of the questions I would ask of said firm:

How many students per class?
What is the travel allowance?
What are the course expectations?

I was paid 1800 an hour to travel to Hsin Chu for. what started out to be 13 students. I was underpaid.