Hi, I am continuing my walk to Rome this May from Switzerland. I used the Ciceronne books for the first half and felt kind “ meh” about its merit. I see there is an “ Official” book from R. Ferraris in English. The book is only €17 but the shipping to USA is €40. Does anyone have an opinion on this book before I spend so much on shipping? Maybe someone in the states has a copy they would want to sell?