Itbis already notified that Tejas rakes Rajdhani will have fare 5% more then the regular Rajdhani. 3AC fares are no profit nor gain in other words the fares are equal to that of operational expenses while SL fares still ate priced 40% lower the real costs. So IR s replacing SL with 3AC and at the same time due to increasing middle Class people income levels and their comfort levels.