Yes, @Zlatislav is right . RootFS charges are currently in preview and will not be added to your monthly bill for now. Billing will start after April 25, 2024. The $0.03 preview charge may be due to a mistake in their usage calculation job . @lubien acknowledge that on a previous reply.
Just wanted to acknowledge there’s some errors in our usage job and we will be shipping a fix asap. We probably won’t be backfilling so previous usages since this processes millions of events but moving forward it should give more accurate values. Also reiterating that there’s no billing happening yet, so no money is affected, just the preview stuff.