You have to pay it.
The part I want to bring to your attention is: Even know the books are on the street for average of 12 months, you are responsible for paying that monthly rate for up to 18 months. If the new books coming out get delayed, you din't sign a contact for 12 months. You may have to pay them the monthly rate for up to 18 months. And be careful about the renewal process, I had a rep automatically renew my account after I told him not too. Seems he renewed my account to collect his commissions, and then left the company. I am still fighting this one, and this happened in July of 2004.
Once again, Read and understand the Terms.
They are a big business, they have no passion for little guys and attorneys will get expensive, they know that.