Membership with Read More Tag - Pay or unpaid articles problem

There are some free articles which the visitors can view all contents, I will need to use read more tag to hide the remaining contents in blog main page. There are other articles which need a payment to view all contents, but I also need a read more tag which is required by membership plugin so the visitors will need to get a membership and login to see all contents. I'm very confused how to achieve both cases in one website. Is it possible?