If the person you referred subscribes for Rs 10,000 in that case you get 20% Commissions i.e. (20% of Rs 10,000 = Rs. 2,000), & this credit benefit you can use as a discount on your next subscription.
If your referral subscribes for Rs 50,000 in that case you get Rs 10,000 as a discount credits i.e. (20% of Rs. 50,000 = Rs. 10,000) & which you can once more be used on your next subscription.