We follow pay first policy both for sales and purchases. Therefore, students need to understand that now vendor or students can start work, until paid in advance, teachers are assigned and books are received by students. The priced books are to be coordinated through the Administration.
We will send estimates of those books. As soon as students are enrolled. Registered in their courses.  If they like to expedite the process, they can ask for estimates will in advance via our support tickets and courses to be enrolled.