It seems that my EC2 usage limit is being reached rather quickly. I have deleted all of my EC2 instances and most of my S3 buckets, and none of my EC2 instances even exist in the terminated state. Are there any other services other than EC2 that use the EBS storage? Thanks in advance.
Amazon EBS is only used by Amazon EC2 instances. (Well, it is also used by Amazon RDS, but it shows up as an RDS charge, not EBS.)
We are currently about a third of the way through the month, so you'd want to be around 30% of usage.
The Amazon EBS snapshot usage is ahead of that (58%). If this worries you, then you can delete snapshots under the Snapshots section in the EC2 console. Amazon Machines Images (AMIs) also use EBS snapshots, so check the Images section too.
The amounts are "growing" because they are based on a month of usage. So, 1GB for 1 day is ~ 3% of the month's total.
However, there is little need to panic — EBS Snapshots are charged at 5c/GB/month, so at the current rate of usage you might be charged 10c.
There can be another possibility where you run an instance with EBS volumes 'not deleted' even after the termination of instance, it can accrue storage charges also. So delete those ones also in the 'Volumes' section of EC2 instance if its still unused.
