This place is amazing but would make more sense to me in another country. It's remarkable to get all kinds of food from all over Italy in one place, but when I'm in Rome I'd rather not spend time in a mall.
That said, they did have things I haven't seen elsewhere, including dark-roasted coffee (roasters here have switched to medium roasts), obscure rices and flours, and 10-year-old Reggiano. Prices were competitive if not downright low, which is not what I expect from that kind of place.
It was pretty dead at around 3 on a Wednesday, but I hear it can be very crowded on the weekends.