what is the cost of enroll Apple Developer for an organization?

No, they are not.

See: https://developer.apple.com/support/compare-memberships/

No. its different. we have 4 types :-

1. Individual - 99$ - 99 devices can test

2. Company - 99$ - 99 devices

3. Organization / Enterprise - 299$ - 299 devices - also can set up enterprise app store

4. University - Free - Its has some rules and regulation

Thanks

5.) Free provisioning - includes device testing.

Thank you sir