Gradeup Green Card Offer: Buy 1 Month Gradeup Green Card at Rs.199. Use coupon code OPT15 for an extra 15% OFF. Gradeup Green Card is a new exam-specific subscription plan for all the Test Series of a particular exam category. The Gradeup Green Card can be found on respective exam pages after clicking on ‘Unlock All Tests’. You can renew your Green Card anytime. However, a banner appears on top of the test series page 7 days before the Card expires, which serves as a reminder to renew one’s, Green Card.