Delhi Book fair is one of the best book exhibition available in India. I used to visit the fair every year. the real point is in selecting the competitive agency and thoroughly go through their products. There are nearly 400 publishers participated in it.So you should be choosy with regard to your selection of publishers and their books for time and money are limited.
Moreover, such a big fair gives you the essential space to go for a comparison betwee books of different publishes so that you can go for the best.