title: Firestore query costs
body: <p>On Firestore I have a social app that stores each user as a document, and queries based on users within a certain distance. </p>
  
  <p>If a user launched the app and had 1,000 users within 50 miles for example, would I be charged for 1000 reads for downloading all nearby profiles? That seems like it would be hyper expensive if I got charged that much every time a user queried nearby users. Is there a cheaper way to do this?</p>