IoT Pricing in detail

Hi , I am a working on a project in which there is a need to make a smart product for consumer purposes. I am currently working to get a price estimate for the project. As a begineer I thought that only IoT central or IoT Hub is what I need , so considered pricing for them only. But as I researched there are various things to take into consideration like database, containers(for hosting application), functions and also APIs , So how much cost do they inccur?i have no idea about the parameters asked on website when I go to pricing calculators? Can anyone help to suggest a suitable pipeline for my purpose and hopefully an estimate for the same. These are some of the aspects I know:

Technical Aspects:
- Number of Inverters (Initially): 200 (Scalable up to 200 per month)
- Number of Parameters per Device: 50-70
- Message Frequency: Variable (once every 10 seconds - 2 minutes) based on pricing
- Messaging Protocol: MQTT
- RPC: Both device-to-cloud and cloud-to-device
- Additional Notes:
- Data received by the cloud platform will be pre-processed at our end.
- No requirement for advanced analytics and data processing in the cloud.
- Mobile application should enable device control (e.g., turning on/off).