A Used Car For Issaic

People keep telling me to swallow my pride and set this up, so here I am. My car desperately needs a new transmission, new tires, and front-end alignment work.  At this point, it would be cheaper for me to just buy another used vehicle. Either way, I simply do not make enough money to do anything about it. I'm keeping the oil changed, and I'm mostly only using the car to get back and forth to work, but the uncertainty that my car wont break down any day, is easily the biggest source of stress in my life. My rent is $900+, but I barely bring home $1500 every month. With my bills paid and a few groceries on hand, I could possibly put away $25 to $50 every month. A used Toyota Camry or something similarly reliable is all I need. My current car (a 2001 Grand Marquise) still looks nice, and runs, so I'm sure it would be great for anybody looking to put a little work into it.  I'm hoping I can sell it and get at least something for it.