How much will it cost to fix my Dell laptop keys?

I've had this laptop for a little more than a year, it's a Dell laptop and the model number is PP41L. I was babysitting and left the room for like 2 minutes to fill up this kid's juice, and when I came back, the kid had pulled out the space bar key and the letter c was aligned weird. Does anyone have any idea as to how much this repair might cost? and should I have the parents of the kids pay? Thanks!How much will it cost to fix my Dell laptop keys?I am very much sure you can buy keyboard online,it might cost around $100.00.You can replace it your,it is simple.self.If you take it to repair it might cost about $200.00

Not sure parents will pay you.It is your responsibility to watch laptop.