It wasn't too bad. I had a very shattered screen that I had to get repaired so I brought it here. I made an appointment and was about 10 minutes late which they didn't give me any grief for. I checked in, spoke with a genius for a couple of minutes, and they told me to come back in an hour and five minutes (at 7:10pm) to pick up the phone. I came back right on time but didn't make it out of there until after 7:40 because the phone was not fixed on time and then it was fixed but in the words of the employee they only had one "runner" to bring the phone out and a table full of people waiting.
I'm not really sure how the roles and responsibilities work at the Apple Store but they had a lot of employees standing around socializing with each other or totally absorbed in their gadgets (not helping customers) you really only have one person that can bring the finished phones out, hand it off to the customer, and accept payment? That's a 2 minute job.
Shattered screen with no phone insurance and no other issues to repair was $139.