Can someone explain the mismatch between doc and API regarding pricing of EC2 AWS Outbound traffic

Question

I'm trying to understand how AWS is computing the pricing for AWS EC2 Outbound traffic. From the doc and for example for region Sao Paolo:

* https://aws.amazon.com/ec2/pricing/on-demand/ 
it says base price is $0 for first 100GB, then $0.15/GB for first 10 TB, then $0.138/GB and so on. Indeed this is what gives the calculator: https://calculator.aws/#/estimate?id=1c7c2b12033911563ef000e40f7a4fc29c5d147c

However when using the AWS Pricing API, I don't get the same pricing:

```
aws --region us-east-1  pricing get-products --cli-input-json '{"FormatVersion":"aws_v1","ServiceCode":"AmazonEC2","Filters":[{"Type":"TERM_MATCH","Field":"transferType","Value":"AWS Outbound"}]}'|jq '.PriceList[]|fromjson'                  
{
  "product": {
    "productFamily": "Data Transfer",
    "attributes": {
      "fromLocationType": "AWS Region",
      "toRegionCode": "",
      "servicecode": "AmazonEC2",
      "usagetype": "SAE1-DataTransfer-Out-Bytes",
      "fromRegionCode": "sa-east-1",
      "transferType": "AWS Outbound",
      "servicename": "Amazon Elastic Compute Cloud",
      "fromLocation": "South America (Sao Paulo)",
      "toLocationType": "Other",
      "toLocation": "External",
      "operation": ""
    },
    "sku": "6ZUKMU6RKW7EH89N"
  },
  "serviceCode": "AmazonEC2",
  "terms": {
    "OnDemand": {
      "6ZUKMU6RKW7EH89N.JRTCKXETXF": {
        "priceDimensions": {
          "6ZUKMU6RKW7EH89N.JRTCKXETXF.VF6T3GAUKQ": {
            "unit": "GB",
            "endRange": "51200",
            "description": "$0.23 per GB Internet Data Transfer - next 40 TB / month data transfer out of Amazon EC2",
            "appliesTo": [],
            "rateCode": "6ZUKMU6RKW7EH89N.JRTCKXETXF.VF6T3GAUKQ",
            "beginRange": "10240",
            "pricePerUnit": {
              "USD": "0.2300000000"
            }
          },
          "6ZUKMU6RKW7EH89N.JRTCKXETXF.8EEUB22XNJ": {
            "unit": "GB",
            "endRange": "1",
            "description": "$0.00 per GB Internet Data Transfer - first 1 GB / month data transfer out of Amazon EC2",
            "appliesTo": [],
            "rateCode": "6ZUKMU6RKW7EH89N.JRTCKXETXF.8EEUB22XNJ",
            "beginRange": "0",
            "pricePerUnit": {
              "USD": "0.0000000000"
            }
          },
          "6ZUKMU6RKW7EH89N.JRTCKXETXF.N9EW5UVVPA": {
            "unit": "GB",
            "endRange": "153600",
            "description": "$0.21 per GB Internet Data Transfer - next 100 TB / month data transfer out of Amazon EC2",
            "appliesTo": [],
            "rateCode": "6ZUKMU6RKW7EH89N.JRTCKXETXF.N9EW5UVVPA",
            "beginRange": "51200",
            "pricePerUnit": {
              "USD": "0.2100000000"
            }
          },
          "6ZUKMU6RKW7EH89N.JRTCKXETXF.WVV8R9FH29": {
            "unit": "GB",
            "endRange": "10240",
            "description": "$0.25 per GB Internet Data Transfer - remainder of first 10 TB / month data transfer out of Amazon EC2",
            "appliesTo": [],
            "rateCode": "6ZUKMU6RKW7EH89N.JRTCKXETXF.WVV8R9FH29",
            "beginRange": "1",
            "pricePerUnit": {
              "USD": "0.2500000000"
            }
          },
          "6ZUKMU6RKW7EH89N.JRTCKXETXF.GPHXDESFBB": {
            "unit": "GB",
            "endRange": "Inf",
            "description": "$0.19 per GB Internet Data Transfer - data transfer out of Amazon EC2 / month over 150 TB",
            "appliesTo": [],
            "rateCode": "6ZUKMU6RKW7EH89N.JRTCKXETXF.GPHXDESFBB",
            "beginRange": "153600",
            "pricePerUnit": {
              "USD": "0.1900000000"
            }
          }
        },
        "sku": "6ZUKMU6RKW7EH89N",
        "effectiveDate": "2022-12-01T00:00:00Z",
        "offerTermCode": "JRTCKXETXF",
        "termAttributes": {}
      }
    }
  },
  "version": "20221222205132",
  "publicationDate": "2022-12-22T20:51:32Z"
}
```

Indeed this is way different: $0 up to 1GB (and not 100GB), then $0.25 for first 10TB, $0.21 and so on. What is the correct price?

Finally, using the AWS Pricing API I can't get any other pricing for other regions. The request above only gives reply for Sao Paulo.

Answer

Hi.

You are right. I also tried (AWS CLI v1 & v2 )  
The amount is incorrect and only the sa-east-1 region is retrieved.

This is probably the wrong behavior of the AWS CLI or AWS API.  
However, I believe Document is correct and API is wrong because the documentation states:

>The AWS Price List Query API provides pricing details for your information only. If there is a discrepancy between the offer file and a service pricing page, AWS charges the prices that are listed on the service pricing page. For more information about AWS service pricing, see Cloud Services Pricing.

https://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/using-pelong.html

Answer

I've run into this frustrating issue as well, but it seems that instead of the EC2 service, the `AWSDataTransfer` service should be queries, e.g.:

```sh
aws --region us-east-1 pricing get-products \
  --cli-input-json '{"FormatVersion":"aws_v1","ServiceCode":"AWSDataTransfer","Filters":[{"Type":"TERM_MATCH","Field":"transferType","Value":"AWS Outbound"}]}'
```

Can someone explain the mismatch between doc and API regarding pricing of EC2 AWS Outbound traffic

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