Windshield wipers scratched windshield.

When I bought my "new" Civic the wiper blade on the driver's side was practically non-existant. Since the dealership was about 30 minutes away from my house and it was raining pretty hard, I had no choice but to use the wipers anyway. This ended up putting a scratch in my windshield. I've heard that there's some glass polish that I could use to get rid of these scratches. If so, where can I get some? Would it be cheaper to just take it to a glass repair place?