How much does it cost to get a cracked iPhone screen fixed?

I dropped my phone back in winter and my mom decided that she will finally take me to get it fixed. How much would it cost (it's just the front in a corner) and where can I take it to get it fixed? Would best buy fix it? The last time I cracked my phone, best buy just replaced it, but I THINK it was a one-time thing.

That depends on the model and if you are going to replace the screen yourself (which starts around $25-40 for the screen for some models, with screens of newer models costing more. If someone else has to install the screen, add $100-250 to the price.