Barilla sells for $1.25 to $1.50 for 454 grams (1 lb) in the US; that's getting close to $2 per lb. De Cecco is premium stuff here. I've seen $4 per lb, which is like $9 per kg.
Barilla is also one of the more generic and blander pastas; once you switch to the higher end, bronze extruded brands, it gets immeediately clear why they cost more. It's still better than some non-Italians brands that are made in normal wheat flour instead of durum wheat semolina, and look so pale and dull they maks you wonder why you didn't cook rice instead.