What's the difference between enrollment fee and membership fee

Enrollment fee is 1 time, membership fee is monthly

Generally, there are four kinds of fees: Enrollment is the one-time sign-up fee. This can vary depending upon the current promotion. Sometimes, there is no enrollment fee. Prorate fee is the partial amount of the monthly fee that covers your membership from the day you sign-up to the next monthly billing date. This amount changes daily and is based upon the membership type. Sometimes, there is no prorate fee. Monthly is the amount billed each month for your membership. The amount is based upon your membership type and how much that fee was when you signed up. Annual fee is the once a year amount paid as a rate guarantee that your monthly and annual fees will not increase as long as you keep your membership.