If you want to buy a book at a low price, the second hand book comes to mind first. There is a large market for old books in Nilkhet , Paltan, Dhaka. I have never been to Paltan , but I have learned from the experience of others that the oldest books are available in Paltan at the lowest prices. If you want to buy new books at low prices, online shops will be the best. You can buy books at low prices based on discounts on sites like Shop , Bookstreet , Daraj , Rokmari etc. It is unknown at this time what he will do after leaving the post. You have to buy by bargaining.