My son accidentally cracked a glass on the back of the camera. It is not an LCD itself, but rather a protective cover over the LCD. I took the camera to photo store and they said they can order the part and fix it but for nearly $130, most of which is labor. Where can I order the part? I'm pretty certain I can handle the replacement myself?
In the US, USCamera.com is a reputable supplier of a limited number of camera parts. I've purchased flash replacement parts from them without any issues.
Ebay is usually a pretty good place to get replacement parts for old cameras, but Amazon has very nice packs with different replacement parts for new cameras. Keep in mind, though that if you decide to use Ebay, most of the stuff there is used. This effectively reduces the price, but the quality could suffer as well. Whenever I buy products from Ebay, I never buy a product unless I can see pictures and it provides an adequate description.
I had an LCD crack on a Canon S60, that I had bought second-hand for about $80. I lurked a while, but was able to buy a S70 on eBay which had a non-working lens and a original case for $25. I was going to change the screen out, but I ended up just swapping the camera back, precisely so I didn't have to pry the replacement screen from the glue. This might be a good option for you as well.
Try ifixit - they offer parts and online repair guides