@Michael Minto There is no financial benefit to creating an Azure free trial and then converting to Pay As You Go other than 200$ credit limit provided when azure free trial is created. The Azure free trial is designed to give you a limited amount of free usage for a period of time, typically 30 days. Once the free trial period is over, you will be charged for any usage beyond the free limit.
If you want to use Azure beyond the free trial period, you can sign up for a Pay As You Go subscription directly. With a Pay As You Go subscription, you pay only for the services you use, and there are no upfront costs or termination fees. You can also take advantage of Azure's cost management and optimization tools to monitor and control your spending.
However, if you are new to Azure and want to explore its features and capabilities, the Azure free trial can be a good way to get started. The free trial gives you access to a wide range of Azure services, and you can use it to test and experiment with different configurations and scenarios. Just be aware that the free trial has usage limits, and you will be charged for any usage beyond those limits.