I expect real estate and labour cost to be a lot more in Rome than Turin but €1 billion sounds way too much. even Emirates stadium didn't cost that much, surely London real estate prices and labour costs are a lot higher than Rome.
Anyway, what do you all make of Montella as a coach? Not sure how to rate him tactically yet, but he's been getting good results with Fiorentina. But really, I just like his style.