konung PRO said about 2 years ago on Remote Development :
Hmm. 



You terminated your instances, but you still have EC2 resources provisioned to your account 

The Elastic Compute Cloud line item in your bill includes resources other than instances. EC2 instances are often used along with other EC2 resources, such as the following: 

  • Elastic IP addresses
  • Amazon Elastic Block Store (Amazon EBS) volumes


I read it the same as DO's - they charge you as long as you consume resources, even if VM is shutdown.  I don't use AWS, so not entirely sure.