A friend suggested that I could use The Book Depository as an Amazon alternative, which was a very helpful tip especially for books over €50. As it happens to many who buy books from online bookstores, sometimes what you get is not what you ordered. In my case I had ordered “The Travelling Salesman Problem” and got “Plato’s Republic“. After some friction with their support service (Amazon is way better in this kind of issues) the order was completed and The Book Depository told me that I could keep “Plato’s Republic” too.
Now since it is highly unlikely that I will ever find time to read this version, I will gladly send it to anyone interested. If nobody shows any interest, I will donate it to a library.