What is the average price to get your iPhone 4/4s screen plus back fixed?

Just got one from my sister and it's cracked in the front and back and a small whole in the back and corner front

Mine cost $75 for the front and there were pieces of the screen falling off so probably around $150 for the whole phone.

You can get a replacement screen and kit on Amazon.com for like 30.00 USD. And there's a YouTube video that shows you how to do it yourself. I learned how to do it on a you tube video and I replaced my sceen and back that way. Hundreds of dollars cheaper. Or usually any computer repair shop can do it. The average price is usually around 120 USD.