Hi,
Thank you for posting the question to the Q&A forum.
The resources cost is not increased, the only thing is what new is deployed under your subscription.
You can check all of the details in Cost Management and then Cost analysis from where you can separate the previous months and the current one and you can see the difference and why the cost is increased.
About Cost analysis, you can find more here: https://learn.microsoft.com/en-us/azure/cost-management-billing/costs/quick-acm-cost-analysis
I hope the above information can help you.
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