My trackpad cracked! How much normally would it cost to replace it?

Hi. Recently my Macbook Air trackpad cracked. I realize that the people on the community are costumers, not employees, but I'm wondering of any of you have gotten your trackpad replaced and how much it cost and if possible, how long it took to replace. Thank you!

P.S. For getting it replaced I am planning on getting it replaced at an Apple Store.