Share your experience!
I heard that it is very difficult to change only the digitizer,because it is connected to the LCD.Also,it needs a firm hand to do it.So,if you want,you can search on ebay,you fill find cheaper pieces,but you will need to do all the work.
I do not think they would agree,but you can contact them and ask:
http://www.sonymobile.com/global-en/support/contact-us/