What you’re buying
Your payment, at the price shown at checkout, gives you a personal license for one year to use:
- every lesson in the Online Library
- the Desmos practice simulator
You use them while signed in to your Deep Test Prep account.
Access lasts one year: from launch day for a preorder, or from the day you pay after launch. It never renews on its own, and you are never charged again unless you buy another year.
Lessons may be revised, added, or retired over time as the SAT and the library change.
Preorders and launch
- The early bird price is $97, and the regular price is $149.
- Paying the early bird price reserves library access for launch. It does not provide access to the paid lessons or simulator before launch.
- The launch is planned for Saturday morning, January 2, 2027. The target date may change.
- A preorder’s year of access starts on launch day, whenever that is.
- Preorders are paid in full, with no additional payment required when the library opens.
All sales are final
Refunds are not offered. A full lesson is free for everyone, with no account needed, so you can see exactly how the library teaches before you buy.
The refund policy explains why.
If a payment is reversed through a bank dispute or chargeback, access to the paid lessons ends for that account.
Your account
Each account is for one person. Please don’t:
- share your sign-in
- resell access
- copy lessons to share or publish elsewhere
Accounts that do may be closed without a refund.
Payments are processed by Stripe. Deep Test Prep never sees or stores your card number.
What the library can and can’t promise
The lessons are built to help you prepare well, but no course can guarantee a particular SAT score.
The SAT is a trademark of the College Board, which is not affiliated with Deep Test Prep and does not endorse it.
Affiliates
People who share Deep Test Prep through the affiliate program earn a commission on sales they refer. Using an affiliate’s link doesn’t change your price.
Questions
Use the form below to ask any question about your purchase or these terms.