Due to coronavirus-related disruptions, I do not currently have inventory to ship. Please consider purchasing access to the Math Guide Online or purchase books through Amazon (here and here). I apologize for the inconvenience and I hope you and yours are safe and healthy.
PWN the SAT: Math Guide is an internationally renowned resource for SAT math prep. Extra SAT Math Practice Volume 1 is a scrappy upstart. Buy both at the same time and save!