Daryaganj and authenticity of the books sold there?

I am planning on going to Daryaganj to buy a couple of books. I am interested in some titles like godaan, nirmala and poos ki raat by M. premchand and maybe a book or two on cooking. What are the chances I will find authentic books there and not end up with missing pages, bad print, repeat pages and all? Considering how some of these books are sold for 80-90 rd on flipkart/amazon, will it be worth it to go to daryaganj or should I wait for book sale?

Ps: I am not sure if I will read them as I still have some backlog 😭 but it's such a shame not to have a premchand novel in your home.