I was driving yesterday and and went to shift from 2nd to 3rd and the engine just cut out on me. I was stuck in traffic and lost all my controls. turned on hazards and tried to restart car. engine turns over but car wont start. lights come on as well. tried to get a jump still wont start. what is most likely suspect (starter/solenoid?) if so what is approx cost for parts and labor? what else could it be?

thanx