It's weird I had the same reaction when I first weighed pasta, sucks because I love it. Been in Italy for a couple of months tho, having tagliatelle or bow tie pasta everyday, and a good, filling plate is about 200-300..
Dunno if different types are different, or different countries.. I'm hoping it's the types :$
If you haven't, check out brown spaghetti, with a good sauce tastes just like normal spaghetti with a big calorie difference.
I wasn't really into brown pasta tho, dunno if I overcooked it a bit, but was just somewhat weird.