Membership fees only apply to active ESHRE members.
Non-members can always apply for membership before registering for the meeting.
If you are going through the individual registration form as a non-member, you will have the option to become an ESHRE member all at once. By selecting that option, the membership fee will be added to your registration fee.
Please note that it's not possible to become a member and register at the same time at the onsite registration desk in Copenhagen.