When you placed your order for the Simple Spell Casting System eKit, you were then presented with an option to upgrade and get the eBook Of Shadows Volume 2, The Prison Witch Interviews, and the life changing spell manual/workbook.
There's an additional charge for this special information, and this is probably what the additional charge is.
Please make sure you were able to receive the upgrade information.
If you haven't received it, or are experiencing some other type of problem, please open a support ticket.