Do you have to keep paying per month for EAS even after deploying for IOS ? Plus it seems like if you have to pay both for EAS and for the actual Apple membership if you are not deploying with Mac
I am pretty sure that you would have to keep paying Apple as long as your app is on the App Store. I had a look on their site, but couldn’t find an explicit answer. Perhaps you will have better luck. Otherwise, contact Apple or ask on their developer forums.