The price of your Series remains the same as it is now. Each subscription charge is for one book.
For example, 6x6 soft-cover books remain at $10.00 per book.
8x8 soft-cover books remain at $15.00 per book.
Hard-cover upgrades are $5.00 additional per book.
Additional credits are the same price.
If you have an active subscription, you get Free Standard Shipping on all orders.