Hello Mike!
So if we already bought your book, then the registration for full membership is free right? I thought it was like 10 dollars discount.

Thank you

If you have the Math Guide, then you get Math Guide Owner membership for free. If you have BOTH books, then you get Full Subscriber membership for free. If you have the Math Guide discount code but try to register for Full Subscriber, you still have to pay the cost of an Essay Guide. 🙂