Books on modern Indian history and politics have become indispensable for a civil services aspirant. This is the best time to buy them. With the arrival of Amazon in India, other players (Flipkart) in the segment have gone paranoid it seems, whatever, benefit is for the customers. This offer is valid for 4 days I think. (upto 85% discounts on various books). Don’t wait for more opportune time, I don’t think they will ever reduce prices to this level.