Well worth getting a screen for £15 off Ebay etc and following a simple guide. Takes about 15 mins to replace yourself and it's really not as hard as it sounds. I'm sure your local shop will charge you £50 for doing the same plus you won't get the same admiration from your eldest!!
https://www.youtube.com/watch?v=7HSK7kS1c9w
https://www.youtube.com/watch?v=7HSK7kS1c9w
Eagles may soar, but weasels don't get sucked into jet engines...