Hi,
I would strongly suggest you attend their webinars. You will then get added to their mailing list and get email notifications of upcoming webinars as well as discount offer notifications. Usually, discounts are offered during some festive events. Also, while making the payment, navigate through the Gmatclub marketplace and as a bonus you will get 3 month free access of
Gmatclub tests. You can also drop them an email to ask for the same. Worst case is you will get a no. Cheers!