In Karachi, they arrange it near Regal Chowk, Saddar where you can find classic books at low prices.
I recently bought this book ‘Tarz e Bayan aur’ by Rashid Ashraf.
Tarz-e-Bayan Aur | www.welbooks.com
The writer is regular visitor of this Itwazr bazar of books and he is doing a wonderful job by not only introducing books he gets there, but also uploaded around 500 rare books online.
For @TLK @hybridkamal @Aceones! @N**abi**gh
This is a must read book. This guy has a facebook account and a website and he keep on updating about books on regular basis.