Pay using Amazon Pay and get 25% cashback up to Rs 100. Amazon Pay cashback is applicable for first time Amazon Pay users on Redbus and can be availed only once. The cashback will be credited into Amazon Pay account. Offer valid ONLY for bus ticket bookings done on or before 31st Jan, 2018. Cashback will be credited into Amazon Pay account within 72 hrs of transaction. The cashback will be valid for 1 year.