I have been an Azure Site Recovery user for over a month. Do I still get the first 31 days free for every protected instance?
Yes. Every protected instance incurs no Azure Site Recovery charges for the first 31 days. For example, if you have been protecting 10 instances for the last six months and you connect an 11th instance to Azure Site Recovery, there are no charges for the 11th instance for the first 31 days. The first 10 instances continue to incur Azure Site Recovery charges since they've been protected for more than 31 days.