1994 Dodge Caravan cost vs worth

I own the above car and have already put nearly $2,000 in repairs. The mechanic said I need new brakes and roters plus a front axle.
I have only SS for income and no savings.
How urgent is it that I repair it. I drive areound 1,000 miles a year. Just to the store or doctor and home.
How important is it that I sould fix all or part. The brakes begin to makes squelling sounds after a number of in town stops.

UPDATE: I took the car over to be fixed and the mechanic told me my brakes are just fine. 10/13/09