Azure SQL Database Backup storage costs - DTU model

Question

Reference: https://learn.microsoft.com/en-us/azure/azure-sql/database/automated-backups-overview?view=azuresql#dtu-model

In the DTU model, there's no additional charge for backup storage for databases and elastic pools. The price of backup storage is a part of the database or pool price.

Does this mean no additional charge for the default seven days of PIT that comes with creating a new database in the DTU model?
What happens if I increase the PIT backup retention beyond seven days?
What happens if I set up long-term retention?
Do I get charged the same way as vCore and explained here?

Answer 1

That is correct. Your DTU cost covers the PITR storage costs. You can change your retention settings within the PITR options without charge.
However ALL LTR is a separate charge, even for DTU SKUs. All LTR is priced the same.