@deng_dev 

The $75 per DBU Premium subscription plan price for Databricks Apps on AWS shown on the Databricks Apps pricing page reflects the charge from Databricks itself. https://www.databricks.com/product/pricing/databricks-apps

However, this is not the full cost you will pay when running Databricks on AWS. 

You will incur additional charges from AWS for the underlying cloud infrastructure

Databricks  + AWS costs simulation example : 

Databricks Apps Premium plan at the listed price of $75 per DBU on AWS. You run a medium-sized app that consumes 0.5 DBUs per hour.

Databricks usage cost for 10 hours:
10 hours × 0.5 DBUs/hour × $75/DBU = $375

Additionally, you run this app on AWS infrastructure, using EC2 instances (at an example rate of $0.10 per hour):

AWS compute cost for 10 hours:
10 hours × $0.10/hour = $1.00

Total estimated cost for running the app for 10 hours:
$375 (Databricks license) + $1.00 (AWS infrastructure) = $376

AWS pricing and cost estimates: https://aws.amazon.com/pricing/

Databricks community Q&A on AWS costs: https://stackoverflow.com/questions/72488574/aws-databricks-pricing-should-we-also-pay-for-ec2-insta...