title: Firestore pricing clarifications for offline cached data
body: <p>It seems odd to me that Firestore would charge me for read queries to locally cached data, but I can't find any clarification to the contrary in the <a href="https://firebase.google.com/docs/firestore/pricing" rel="noreferrer">Firestore Pricing document</a>. If I force Firebase into offline mode and then perform reads on my locally cached data, am I still charged for each individual entity that I retrieve? </p>
  
  <p>Second, offline users in my app write many small updates to a single entity. I want the changes to persist locally each time (in case they quit the app), but I only need eventually consistent saves to the cloud. When a user reconnects to the internet and Firestore flushes the local changes, will I be charged a single write request for the entity or one per <code>update</code> call that I made while offline?</p>
  
  <p>Firestore could potentially fit my use case very well, but if offline reads and writes are charged at the same rate as online ones it would not be an affordable option.</p>