@AlejandroBentezAragn-9760 The cost of Blockchain Workbench is an aggregate of the cost of the underlying Azure services. Pricing information for Azure services can be calculated using the pricing calculator. There is no straight forward way to reduce to 0$ consumption when you are not using Azure Blockchain Workbench though, each service has it's configurations that allows you to spend the less as possible in your Azure Subscription. The list of services is here: Deploy Azure Blockchain Workbench Preview
Example deployment created in resource group.