Under normal circumstances, the registration fee is, for example, 3000 yuan, which is the registration fee for each author or article. If an author has two papers, then each article must register at least one author, and the author needs to pay 6000 yuan.
Every item needs to be registered. You can use public account, private account and invoice. EI members who register online do not charge their own fees, but the fees paid are paper registration fees, not membership fees.