its more economical for you to get them second hand as a new pair from honda will cost you a lot.
my 2009 civic's mirrors and housing got stolen on 23rd march 2010 from tariq road karachi.
got them replaced with originals from Honda for Rs35,000.
i only had to pay 5% as the car was thankfully insured.
the best part was the insurance people brought the mirrors home and replaced them... so i didnt even have to leave home.