Here in Kerala, Airtel has introduced recharge coupons of RS 2.00 with the caption “Randil oru Gundu”. It is somewhat like trying luck. Every coupon will carry a gift, starting from a single AirTel to AirTel call to even 1 year validity. Due to the amazement, I bought 5 coupons. In total, I got 6 days extra validity, 1 minute any Local mobile call, 2 minutes AirTel to AirTel and 1 SMS. Its not so bad for RS 10, I think.