Basically: My 20D is broken.
In more detail:
While visiting NYC last weekend, I was having problems with my 20D's battery. Whenever I removed and reinserted the battery, the camera would immediately prompt me to set the time and date. I assume this is because the internal battery that runs the clock died. I was able to deal with this minor problem.
However, my family decided to go see the World Trade Center Memorial. About half an hour before going, the camera worked fine. A couple minutes after going through security (basically airport security), it completely quit on me. I can't turn the camera on anymore. I've tried charging the battery and using completely different batteries.
I believe the dead clock battery must have had something to do with it.
Should I send it to Canon? Will that cost too much? Should I just get a new camera? (I'm 18 and have no job, so spending a lot of money isn't favorable.)
Thanks in advance for the help.