IPhone 4S screen got cracked last night. How much am I looking to spend to fix?

I just cracked the screen in the bottom corner. LCD is just fine. Was wondering what it cost for apple to fix it, and what the average cost for independent repair shops charge to fix? Can a crack on the screen lead to later problems like pieces of the screen pushing into LCD and eventually breaking the LCD as well? Any help or advice would be greatly appreciated, and thank you for your time.

I just payed 60 for a real apple screen so it should be around that i replaced it myself tho