At a time when small businesses are struggling, bookstores are opening and closing, and there are many challenges with distribution, Yordan D. Radichkov did something quite strange: he opened One Book Bookstore, at 8 Varbitsa Street, which only sells one book for a specific amount time, along with prints by illustrators who worked on that edition.

Dani Radichkov is the author of three books of short stories and the founder of the "Nike" publishing house, in which he republishes the books of his famous grandfather Yordan Radichkov. Danny is also the driving force behind One Book Bookstore - a space at 8 "Verbitsa" street, in which for a certain time only one book is sold, as well as prints of the illustrators who worked on the title.