When I look at the pricing pages Power Pages Pricing | Microsoft Power Pages it tells me Dataverse storage is included in a Pay-as-you-go plan:


When I look at how to set up a Pay-as-you-go plan Set up a pay-as-you-go plan - Power Platform | Microsoft Learn it tells me Pay-as-you-go is available for production and sandbox environments.
When I try to convert my trial environment to a production environment, it tells me I need at least 1GB of database capacity:

When I try to add database capacity Add Microsoft Dataverse storage capacity - Power Platform | Microsoft Learn it tells me I'll need to pay £30.20 per month:

How can it say Dataverse storage is included in a Pay-as-you-go plan if I have to pay £30.20 per month? Or have I missed or misunderstood something?