When using the Google Maps Reviews API with sort=newest and a cutoff timestamp, am I billed for a place/query if the response returns zero new reviews (because nothing has changed since the cutoff)?

Questions
1

  1. What I want to know is;

    1. Is billing based on the number of reviews *returned*, or is there a minimum charge per place/query regardless of how many reviews come back?

2. If I query 1,000 place IDs daily with a cutoff filter and only 30 return new reviews (970 return empty), am I charged for all 1,000 queries, or only for the 30 that returned data?

3. Is there a separate 'request' or 'query' fee independent of the per-1,000-reviews record pricing, even when the result set is empty?

    Will appreciate yoru answer.