Does the genius bar cost money?

My iPhone 4s, out of warranty, has just randomly shut off and it will not turn back on. I have plugged it in and done anything and everything possible. The lock button is also messed up, so I can't do the reboot thing. No one has been able to help me, so I decided to reserve a spot on the genius bar thing on the website. Then, I saw that they charge certain people. Will they charge me for any services? I do not have any money to spend at the moment.

Well when you talk to them they are going to tell you if there's a charge. My bet is there will be, but it does not cost to talk to them. Also you could go to apple support forums and look for a answer there. You won't be charged and may find out what's wrong.