Can someone explain the EC2 costs that I incurred over the past 1 - 1 and 1/2 weeks?

Hi There

The charges look like they are related to "EC2-Other". This could be a number of things including EBS Volumes or NAT Gateways. You can see exactly what you are being charged for in Cost Explorer by changing the Group By dimension to Usage Type and the Service under Filters to EC2-Other. See below for an example

Does the t4g.small have a public IPv4 address? This now costs $0.005 per hour, so if the instance is running 24 hours per-day this would explain the 12 cents per-day in blue and marked as VPC https://aws.amazon.com/blogs/aws/new-aws-public-ipv4-address-charge-public-ip-insights/

Hello.

Are you using the AMI of the target OS?
As I read this article, I thought that the only applicable OS would be Amazon Linux 2, RHEL, and SUSE Linux.
https://aws.amazon.com/ec2/faqs/#t4g-instances

Q: Is there an additional charge for running specific AMIs under the T4g free trial?

Under the t4g.small free trial, there will be no Amazon Machine Image (AMI) charge for Amazon Linux 2, RHEL and SUSE Linux AMIs that are available through the EC2 console Quick Start for the first 750 free hours per month. After 750 free hours per month, regular On-Demand prices, including AMI charge (if any), will apply. The applicable software fees for AWS Marketplace offers with AMI fulfillment options is not included in the free trial. Only the t4g.small infrastructure cost is included and covered under the free trial.